Showing posts from 2020

Write short notes about WS-Resource characteristics.

WS-Resource is a stateful resource that can be used as a data context for a Web service to exchange messages. WS-Resource can be created, identified, and destroyed. A WS-Resource can have lots of identifiers within the same Web service or within different Web services. A stateful WS-Resource type can be associated with a Web service interface definition to allow well-formed queries against the WS-Resource via its service interface, and the status of the stateful WS-Resource can be queried and modified via service message exchanges.

Mention some WS-specifications?

WS-Resource Life timeWS-Resource PropertiesWS-Notification

What is mean by WSRF?

The WSRF is a set of WS specifications. It introduces WS-Resource to model and manage state information in the context of Web services. A stateful resource associated with a Web service is referred as a WS-Resource.

What do you mean by atomicity and aggregation?

Atomicity: Either all actions are carried out or none. Users should not have to worry about the effect of incomplete transactions. DBMS ensures this by undoing the actions of incomplete transactions. Aggregation: A concept which is used to model a relationship between a collection of entities and relationships. It is used when we need to express a relationship among relationships.

What is join dependency and inclusion dependency?

Join Dependency A Join Dependency is generalization of Multivalued dependency. A JD {R1, R2, R3, ..., Rn} is said to hold over a relation R if R1, R2, R3, ..., Rn is a lossless join decomposition of R. There is no set of sound and complete inference rules for JD. Inclusion Dependency An Inclusion Dependency is a statement of the form that some columns of a relation are contained in other columns. A foreign key constraint is an example of inclusion dependency.

What are your contributions in order to meet the goals of your company?

I'm a hard worker with the experience to get things done efficiently. I can contribute my organizational skills and my ability to work well in a group. I have the experience, contacts and knowledge to contribute to the rapid growth of this business. Vision. I'm experienced in the areas this company needs to grow and my ability to plan ahead will help facilitates that growth.

Kitchen - Tips for safe & happy cooking

Do'sKitchen should be well ventilatedUse a cotton apron while cookingDon'tsDo not keep refrigerator in the kitchenDo not have curtains in the kitchenDo not wear nylon clothes while cookingDo not use clothes to lift vessels from the stoveNever leave vessels unattended on a burning gas stove

Safety of children - Tips for safe & happy cooking

Do not allow children to play in the kitchen

What is mean by middleware?

Middleware is software that connects two or more other wise separate applications across the Internet or local area network. Middleware makes resource sharing seem transparent to the end user, providing capabilities, consistency, security and privacy.

Define short notes on GRAM

GRAM provides resource allocation, process creation, monitoring and management services. The most common use of GRAM is the remote job submission and control facility. GRAM simplifies the use of remote systems.

Define some important characteristics of legion system

Everything is an objectClasses manage their own instancesUsers can provide their own classesCore objects implement common services

Write short notes on Legion

Legion is a middleware project initiated by University of Virginia, is object based meta system software for grid applications. The goal of legion project is to promote the principled design of distributed system software by providing standard object representations for processors, data systems, file system and so on.

List some grid computing toolkits and frameworks?

Globus ToolkitGlobus Resource Allocation Manager (GRAM)Grid Security Infrastructure (GSI)Information ServicesLegionCondor and Condor-GNIMRODUNICORENMI

What is meant by grid infrastructure?

Grid infrastructure is a complex combination of a number of capabilities and resources identified for the specific problem and environment being addressed. It forms the core foundations for successful grid applications.

What are the grid applications?

SchedulerResource brokerGrid portalsLoad BalancingIntegrated solutions

Define grid computing

Grid concept is defined as control sharing of resources and problem solving in dynamic, multi institutional virtual organization. Grid computing is a open standard. It has well defined policies and conditions to solving the problem.

Capital punishment for rapists

Background: Six drunken men were joyriding in a bus last Sunday when they picked up the physiotherapy student and her 28-years-old male companion. They took turns raping her before throwing the pair off the speeding vehicle. During her ordeal, the victim was attacked with an iron rod, causing serious intestinal injuries. Six men have since been arrested. A combination of abusive sexual behavior, a scant fear of the law and India's creaky judicial system encourage such attacks. The number of rape cases in New Delhi has risen by nearly one-fifth to 661 this year from a year ago, according to government figures, the highest among India's big cities. Favor of Strict Laws: Fear of law, there is no fear of law left in criminals so there is need to make strict laws in India which will again establish the respect for law in heart and mind of citizens. We need even more fearful laws then capital punishment so criminals think twice before such he…

How can you say that you are the right candidate?

This job involves technical skills and I possess the required skills. I am the best person for this job because I am a dedicated individual who is committed and determined to get the job done. You can go through my achievements to ensure the same. I am a people's person who can encourage team work. I am self motivated and I try my best to motivate the persons working along with me, to increase job satisfaction and productivity. I can assure you that I will be an asset to your organization.

Lighting the burner - Tips for safe & happy cooking

Do'sIt is safer to use a match to light the burnerAlways light the burner from the edgeLight the burner with knob in SIM positionDon'tsDo not use gas lighters with a weak flashDo not light the burner if you smell gasDo not place match-box on the gas stove

Inflammable material - Tips for safe & happy cooking

Avoid naked flames and inflammable material near your gas cylinderDo not place shelves above the gas stoveCooking platform should not be made of inflammable materialNo source of heat or flame should be brought close to the gas cylinder

What is an attribute?

It is a particular property, which describes the entity.

What is Weak Entity set?

An entity set may not have sufficient attributes to form a primary key, and its primary key compromises of its partial key and primary key of its parent entity, then it is said to be Weak Entity set.

What is an Extension of entity type?

The collections of entities of a particular entity type are grouped together into an entity set.

What is an Entity set?

It is a collection of all entities of particular entity types in the database.

What is an Entity type?

It is a collection (set) of entities that have same attributes.

What is an Entity?

It is a "thing" in the real world with an independent existence.

Leakage - Tips for safe & happy cooking

Do'sIf you smell gas, close regulator and burner knob immediatelyIf you smell gas, put out all flamesIf you smell gas, open all doors and windowsIf you smell gas, put the safety cap on the valveIf you detect gas leakage, contact your distributor immediatelyIn case of heavy leakage, call the Fire BrigadeDon'tsNever trace a leakage with an open flameIf you smell gas, do not operate electric switches

What are the areas are difficult to implement in Grid Computing Infrastructure?

A Grid computing infrastructure component must address several potentially complicated areas in many stages of the implementation. These areas areSecurityResource managementInformation servicesData management

What is Object Oriented model?

This model is based on collections of objects. An object contains values stored in instance variables with in the object. An object also contains bodies of code that operate on the object. These bodies of code are called methods. Objects that contain same types of values and the same methods are grouped together into classes.

What is E-R model?

This data model is based on real world that consists of basic objects called entities and of relationship among these objects. Entities are described in a database by a set of attributes.

What is Data Model?

A collection of conceptual tools for describing data, data relationships, data semantics and constraints.

Love is the basis of happy life

Love means affection and tender devotion. The secret of happiness is in love. They saying is "love your neighbour as thyself". Everybody wants to be happy. The real happiness is in making others happy. Some people believe that wealth alone can give them happiness. To some others a lot of wealth does not give them happiness. More over wealth acquired in bad ways gives more worry than comfort. Such wealth may give them material comforts. Happiness is not in one's power to harass others. Power mongers get into politics and thrive in different capacities. But it is certain that such a person will not be happy. A man in power may do many wrong things that deprives him of happiness. To hime material comforts will be in plenty. Spirityality provide happiness to some who are saints. Some people idulge in intoxicants inorder to escape from the problem in the world. This happiness is superficial and it may be t…

What is a view? How it is related to data independence?

A view may be thought of as a virtual table, that is, a table that does not really exist in its own right but is instead derviced from one or more underlying base table. In other words, there is no stored file that direct represents the view instead a definition of view is stored in data dictionary. Growth and restructuring of base tables is not reflected in views. Thus the view can insulate users from the effects of restructuring and growth in the database. Hence accounts for logical data independence.

What are the uses of Integrated Solutions?

The integrated solutions are the combination of the existing advances middleware and application functionalities, combined to provide more coherent and high performance results across the grid computing environment.

What is Data Independence?

Data Independence means that "the application is independent of the storage structure and access strategy of data". In other words, the ability to modify the schemas definition in one level should not affect the schema definition in the next higher level. Two types of Data Independence: Physical Data Independence Modification in physical level should not affect the logical level. Logical Data Independence Modification in logical level should affect the view level. NOTE:Logical Data Independence is more difficult to achieve.

Rubber tube - Tips for safe & happy cooking

Do'sCheck rubber tube for cracksChange rubber tube at least once in two yearsAlways replace defective rubber tube with ISI approved tube onlyKeep rubber tube uncovered and visibleIf rubber tube is cracked at ends, snip off ends and refix tubeWhile fixing rubber tube, push it over the entire length of the nozzleDon'tsThe rubber tube must not be longer than 1.5mDo not insert rubber tube by applying oil or soap. Use only water for softeningDo not pass rubber tube through hole or pipe in the cooking platformDo not place hot objects on the rubber tubeDo not place any heavy object on the rubber tubeDo not cover tube with a metal jacketDo not cover leakage in rubber tube with plastic bags or cloth

List out the grid portal capabilities

Querying databases or LDAP servers for resource-specific informationFile transfer facilities such as file upload, download, integration with custom software, and so onManage job through job status feedbacksAllocate the resources for the execution of specific tasksSecurity managementProvide personalized solutions

How is the data structure of System R different from the relational structure?

Unlike Relational systems in System R Domains are not supportedEnforcement of candidate key uniqueness is optionalEnforcement of entity integrity is optionalReferential integrity is not enforced

How much salary do you expect?

Thanks for asking this question, I think you have already decided the salary for this position and I will be fine with that because your company is well reputed company and offers good salary packages.

What are your goals?

Sir, my short term goal is to get a job in good organization like yours and long term goal is to be in a respectable position in that organization.

Why do you want to work at our company?

It will be very glad to work with your company, because as per my experience, I have learned many things about corporate life and it will be my pleasure to start up with your organization to learn and more. I want to experience talent pool and utilize the same. And I am sure this is the perfect time and perfect platform to get better exposure and to work in long term basis. I would be very happy to be a part of this company.

Man does not live by bread alone

Every living being has an important feeling to survive. This is more true in the case of man also. Food is very important for all his activities. Starving leads to misery and finally death. I case of shortage of food, only the fittest survive. In order to live, he must procure food. Hunger is the worst suffering for any animal including man. We cannot except a hungry man to go in for freedom of speech and expression. Nor does he want his right to vote. To read great works of literature is also not possible for a hungry man. He needs food more than anything else. It is man alone who has been endowed with the faculty. He has many storage desires to be fulfilled. The sense of beauty is very predominant in man. To him a thing of beauty is a joy for ever. There is in him a sense which makes him go after some forms of beauty or the other. A beautiful bunch of flowers gladdens the heart of every one. Music which is t…

Cylinder - Tips for safe & happy cooking

Do'sAlways store cylinder in an upright positionRetain safety cap with nylon thread attached to the cylinderFix safety cap on the valve when the cylinder is not in useThe cylinder must always be lower than the stove levelDon'tsNever keep the cylinder in a pit below floor levelDo not place cylinder in a closed cabinetDo not keep cylinder on a level higher that the stoveDo not keey cylinder in the sunDo not change the colour of the cylinder

What is the use of load balancing?

To avoid processing delays and over commitment of resources.

What is the use of resource broker?

The resource broker provides pairing services between the service requester and the service provider.

What is System R? What are its two major subsystems?

System R was designed and developed over a period of 1974-79 at IBM San Jose Research Center. It is a prototype and its purpose was to demonstrate that it is possible to build a Relational System that can be used in a real life environment to solve real life problems, with performance at least comparable to that of existing system. Its two subsystems are Research StorageSystem Relational Data System

What are your strengths and weaknesses?

Strengths:Abe to work anywhere & any environmentHonest for workQuick learnerConvincing skillsHard workingSporting spiritMultitaskingI like to solve the problem with innovative ideas to reduce the cost and timeWeakness: I think my weakness is I am fresher, without any experience because of continuous education.

Why should I hire you?

Sir, Your requirement is to hire a fresher. But your question is that why should you hire me from the choice of others. I could reason this. Your best choice is to hire me because I have the ability to put all my effort & work on that once I get committed to a particular task. I would also like to learn more from the work that I do, so that I could think for a solution to a problem associated with it. Being a positive attitude person I can prove that I will serve the best of your company. Thanking you!

Science - A blessing or a curse

Science gives us knowledge arranged in an orderly manner. We make observations. We arrive at facts. The facts are tested and results obtained. Man has an enquiring mind. He tries to understand the natural phenomena. In the early days, Man was a slave to Nature. But today he is a master of Nature. Electricity is the first gift of Science. Many types of machines are run on electricity. Some of our Home appliances like Mixie, Grinder, Iron box etc also run on electricity. At night, we switch on electric lights to illuminate our rooms. In factories, electric power is used. Medical Science has increased our longevity. The rate of infant deaths has been very much reduced. The discovery of medicines has given us the cure for various infectious diseases like cholera, small pox and Tuberculosis. Certain medicines are used to keep us away from infectious diseases. Diseases like cancer are cured by Radio Active rays. …

What are the areas we need scheduler?

Advanced resource reservationService–level agreement validation and enforcementJob and resource policy management and enforcement for best turnaround times within the allowable budget constraintsMonitoring job execution and statusRescheduling and corrective actions of partial failover situations

Tell me about yourself

Good Morning Sir/Madam. I would like to thank you for giving this opportunity to introduce myself to you. My name is NAME and I am from NATIVE PLACE, DISTRICT. I have finised my graduation at COLLEGE NAME in the stream of GRADUATION and coming to my schooling I did my schooling at SCHOOL NAME. My hobbies are HOBBIES. Coming to my achievements I am a ACHIEVEMENT DETAILS. My short term goal is to ge a job in good organization like yours and long term goal is to be in respectable position in that organization. My role model is ROLE MODEL AND REASON. And I would like to work in your company because it is one of the reputed company. That's all about me. Thank you Sir/Madam.

Define Scheduler

Schedulers are types of applications responsible for the management of jobs, such as allocating resources needed for any specific job, partitioning of jobs to schedule parallel execution of tasks, data management, event correlation and service-level management capabilities.

Ten tips for safe & happy cooking

Always place cylinder in an upright positionCheck rubber tube for leakage regularlyClose regulator and burner knobs when you smell gasDo not place naked flame or inflammable material near the cylinderAlways take care while lighting the burnerDo not allow children to play in the kitchenDo not wear synthetic clothes while cookingDo not place gas stove below kitchen shelves or on the floor while cookingDo not try to repair the cylinder yourselfPut off all open flames while changing cylinder

What is Storage Definition Language (SDL)?

This language is to specify the internal schema. This language may specify the mapping between two schemas.

Frequently Asked Interview Questions for Freshers

Points to remember before you attend this interview questions:Assume, now you are sitting in front of the HR manager.Take the initiative to attend this question and tell your real answers.Questions:Tell me about yourself.Why should I hire you?What are your strengths and weaknesses?Why do you want to work at our company?What are your goals?How much salary do you expect?How can you say that you are the right candidate?What are your contributions in order to meet the goals of your company?Can you explain about corruption?Who is your Role Model and Why?What do you consider to be the important element of team worker?What will you do if you were not selected today?Who is your favorite player and Why?Who is your Best Boss?If you were a super hero what would be your superpower and why?Tell me about your Native Place?Tell me What you did since morning?What is your Favorite color? Talk about it.Tell me about a memorable day in your life?Describe the movie you have seen recently?Tell me about yo…

List out the applications of Grid computing?

Application partitioning that involves breaking the problem into discrete piecesDiscovery and scheduling of tasks and workflowData communications distributing the problem data where and when it is requiredProvisioning and distributing application codes to specific system nodesAutonomic features such as self-configuration, self-optimization, self-recovery and self-management

Know About Tirukoilur

Tirukoilur is a pilgrimage town in Kallakurichi district in the Indian state of Tamil Nadu. As the name says “koil” (means temple in Tamil language) it is famous for the temples. The Ulagalantha Perumal Temple is located in the centre of the town. The Veerataneshwara Shiva Temple at East Thirukoilur. Tirukkoilur a small town studded with number of temples both Vaishnava and Saivasects, was once a capital of an important chieftain Malayaman of Sangam age datable to 3rd century BCE to 3rd century CE. To corroborate this, a Tamil Brahmi inscription at Jambai (near Tirukkovilur) mentions about the King AthiyamanNedumanAnchi as SathiyaPutoAtiyanNedumanAnjihiIttaPali. MalaiyamanTirumudikkari was the illustrious ruler of this dynasty. The Sangam works speak of the invasion of Tirukkoilur and defeat of MalayamanTirumudikkari by NedumanAnji, king of Takadur (modern Dharmapuri) who is said to have offered Avvaiyar, the celebrated poetess (of that period), a myrobal…

What are the business areas needs in Grid computing?

Life SciencesFinancial servicesHigher EducationEngineering ServicesGovernmentCollaborative games

Few tips to save cooking gas

Reduce flame when boiling startsUse a pressure cookerSoak cereals in water, well before cookingPlan your meals. Avoid frequent re-heating of foodCook with minimum quantity of waterAllow frozen food to reach room temperature before cookingUse wide, shallow vessels for cookingKeep all cooking ingredients ready before you start cookingUse small burner more oftenClean gas burners regularly

Sunrise - Natural Drawing by Jagadeesh Karthik

Title: Sunrise - Natural Drawing
By: Jagadeesh Karthik
Date: 8th August 2020 Created using crayons and sketch pen.

What are the business benefits in Grid Computing?

Acceleration of implementation time frames in order to intersect with the anticipated business end results. Improved productivity and collaboration of virtual organizations and respective computing and data resources. Allowing widely dispersed departments and business to create virtual organizations to share data and resources.

What is the role of a grid portal?

Grid portal provide capabilities for Grid Computing resource authentication, remote resource access, scheduling capabilities, and monitoring status information.

What is View Definition Language (VDL)?

It specifies user views and their mappings to the conceptual schema.

Visual Display Unit (VDU)

The computer can output the information by transmitting the electronic pulse code of characters through a cable to the Visual Display Unit (VDU). The VDU decodes the transmission and displays the appropriate characters on the screen. Most VDUs can receive and display data at speeds upto about 900 characters per second. Latest VDUs are equipped with touch sensitivity. There are graphical VDUs with a colour system and can produce designs which are helpful in several applications. Most of our TV sets can be used as visual display units. CPU can be attached to this TV set, which will act as a computer.

What are computational grids?

A computational grid is hardware and software infrastructure that provides dependable, consistent, pervasive and inexpensive access to high-end computational capabilities.

What is Data Definition Language (DDL)?

A database schema is specified by a set of definitions expressed by a special language called DDL.

திருக்கோயிலூர் உலகளந்த பெருமாள் கோவில் தரிசனம் - ஆலய வழிபாடு by Sun TV

உலகளந்த பெருமாள் கோவில் - திருக்கோயிலூர் Review by Sun TV in ஆலய வழிபாடு Show in Youtube

Why is chlorine used to disinfect water?

Chlorine is used to disinfect water because chlorine chemicals are very effective against bacteria, viruses and fungi that contaminate water. The process of adding chlorine to water is called water chlorination.

What is normalization?

It is a process of analysing the given relation schemas based on their Functional Dependencies (FDs) and primary key to achieve the properties. Minimizing redundancyMinimizing insertion, deletion and update anomalies

Why do we need robots?

We need robots for dangerous, repetitive and high-precision work. Robots perform tasks in hostile environments that are impossible for humans. They also carry out repetitious tasks with speed and accuracy. Without robots, our modern industrialized world would not be possible.

What is a Phantom Deadlock?

In distributed deadlock detection, the delay in propogating local information might cause the deadlock detection algorithms to identify deadlocks that do not really exist. Such situations are called Phantom Deadlocks and they lead to unnecessary aborts.

Why is Halley's comet famous?

Halley's comet is famous because it is the only known short-period comet that is regularly visible to the naked eye from Earth and the only comet that might appear twice in a human lifetime. Halley last appeared in the inner parts of the Solar System in 1986 and will next appear in mid-2061.

பொது அறிவு கேள்விகள் மற்றும் பதில்கள்

19 செப்டம்பர் 2020 அன்று புதுப்பிக்கப்பட்டதுமுக்கடல் சேரும் இடம் எங்குள்ளது?கன்னியாகுமாரிகாசிபதில்: கன்னியாகுமாரிமலையாளம் என்பது ஒரு?மலர்மொழிபதில்: மொழிகொடைக்கானல் ஒரு சுற்றுலாதளம்?பதில்: ஆம்லட்டு என்றால் என்ன?பதில்: இனிப்புபிரபலமான தென்னிந்திய உணவு எது?பதில்: இட்லி சாம்பார்திண்டுக்கல்லில் சிறப்பு எது?பூட்டுபிரியாணிபதில்: பூட்டுசெம்பருத்தி பூவின் நிறம்?கருப்புசிவப்புபதில்: சிவப்புமெரினா கடற்கரை எங்குள்ளது?திருநெல்வேலிசென்னைபதில்: சென்னைஇதில் இசையமைப்பாளர் யார்?அனிரூத்ஜீவாபதில்: அனிரூத்மாமல்லபுரம் எங்குள்ளது?தமிழ்நாடுராஜஸ்தான்பதில்: தமிழ்நாடுமீனாட்சி அம்மன் கோவில் எங்குள்ளது?மதுரைசென்னைபதில்: மதுரைகும்பகோணத்தில் சிறப்பு எது?டிகிரி காபிமாங்காய்பதில்: டிகிரி காபி

General Knowledge Questions and Answers

Updated on 19 September 2020Which place is famous for silk?DubaiKanchipuramAnswer: KanchipuramWhere is the Taj Mahal?KanchipuramDelhiAnswer: DelhiHow many States are there in India?28How many Union Territories are there in India?8What is the National anthem of India?Jana Gana ManaWhat is the national flower of India?LotusWhere is Marina Beach?ChennaiWhich place is famous for Alva?TirunelveliChennaiAnswer: TirunelveliKanchipuram located in?TamilnaduMumbaiAnswer: TamilnaduWhat is the national animal of India?Bengal TigerChennai is a capital of Tamilnadu.TrueFalseAnswer: TrueWhat food is famous in Tamilnadu?PongalWhere is Meenakshi Amman Temple?MaduraiMalayalam is a?FlowerLanguageAnswer: LanguageJallikattu festival celebrated in?TamilnaduGoaAnswer: TamilnaduIndian film industry is also known as?BollywoodKollywoodAnswer: BollywoodWhen we are celebrating Independence Day?Aug 15May 1Answer: Aug 15What is Youtube?Online Video Sharing PlatformMusical InstrumentAnswer: Online Video Sharing Pla…

Why did Draupadi marry the five Pandavas?

The reason is that Kunti had unknowingly asked the Pandavass to share what they had brought on that day. She did not know that Arjuna had won Draupadi in the court of Draupada.

What is indexing and what are the different kinds of indexing?

Indexing is a technique for determining how quickly specification can be found. Types: Binary search style indexingB-Tree indexingInverted list indexingMemory resident tableTable indexing

Why is democracy considered the best form of government?

Democracy is considered the best form of government because it improves the quality of decision making, enhances the dignity of citizens and it is an accountable form og government.

Facts about the Human Body

Each hand has 27 bones: 8 in the wrist, 5 in the palm and 14 in the fingers.Tears are normally secreted through two canals near the corner of the eyes.The nose can recognise upto 1,000 different smells. It is the air conditioning unit of the body.Fingers have no muscles.Nails are made up of hardened skin called keratin and protect the ends of the fingers and toes.The stongest muscle in the human body is the masseter muscle in the Jaw.The smallest muscle in the body is located in the middle ear.The human heart pumps over 13,640 litres of blood per day.

Why currencies have different values?

Currencies have different values because the values are determined by the forces of demand and supply which varies between countries. If there are more buyers than sellers of a certain currency, its value goes up. The reason behind more buyers may be good economy and development of the country.

What is meant by query optimization?

The phase that identifies an efficient execution plan for evaluating a query that has the least estimated cost is referred to as query optimization.

What is durability in DBMS?

Once the DBMS informs the user that a transaction has successfuly completed, its effects should persist event if the system crashes before all its changes are reflected on disk. This property is called durability.

Famous Indians and their Nicknames

IndiansNicknamesRabindranath TagoreKaviguruMahatma GandhiFather of the NationA.P.J. Abdul KalamMissile Man of IndiaRanjit SinghLion of PunjabP.T. UshaPayyoli ExpressSarojini NaiduNightingale of IndiaSir Dadabhai NaorojiGrand Old Man of IndiaSardar Vallabhbhai PatelIron Man of India

10 Tips for Successful Communication

Plan Your Script - It is very important to prepare and plan your script, so that you do not miss any point.To have an Impressive Start Note - You should always start with a 'quotation' or live examples. Never use abusive language or make insults. One can also start with decent jokes depending on the situations.Speak Clearly - Do not eat your words or go fast at the end of he sentences.Speak with Confidence - Speak clearly and confidently. Practice makes a man perfect. Therefore practise to speak, keeping mirror in front of you. This will give you confidence to speak on the stage.Speak Short Sentences - Speak short or brief sentences. Always speak to the point as it lessens the chances of mistake and saves your time and efforts.Do not Use Ambiguous Words - Your words should not have double meanings. It should be clear and simple. To have healthy communication, avoid ambiguity.Be Friendly and Enjoy Yourself - Talk to your audience as friends as it is important to win over them w…

What is CSS Box model and its uses?

CSS box model is made up of margins, borders, padding and content. Box model provides a structured way to space elements in relationship to each other.

What are some of the features of ES6?

Some of the new features of ES6 are: Support for constants (also known as "immutable variables")Block-scope support for both variables, constants, functionsArrow functionsExtended Parameter HandlingTemplate Literals and Extended LiteralsEnhanced Regular ExpressionDestructing AssignmentModules, Classes, Iterators, GeneratorsEnhanced Object PropertiesSupport for Map/Set & WeakMap/WeakSetPromises, Meta-Programming, Internationalization and Localization

What is extension and intension?

ExtensionIt is the number of tuples present in a table at any instance. This is time dependent.IntensionIt is a constant value that gives the name, structure of table and the constraints laid on it.

Define the "Integrity Rules"

There are two integrity rules. Entity IntegrityStats that "Primary key cannot have NULL values".Referential IntegrityStates that "Foreign key can be either a NULL value or should be Primary key value of other relation".

10 Interesting Facts You May Know

A 1,200 pound horse eats about seven times its own weight each year.The Eiffel Tower receives a fresh coat of 300 tons of reddish-green paint every seven years.A cow gives nearly 200,000 glasses of milk in her lifetime.The average person falls asleep in seven minuts.The estimated weight of the Great Pyramid of Egypt is 6,648,000 tons.An ostrich's eye is bigger than its brain.Offered a new pen to write with, 97% of people will write their own name.The botanical name of the chocolate plant is Theobramba cacao, which means "Food of the Gods".Camels have three eyelids to protect themselves from blowing sand.The average person walks the equivalent of twice around the world in a lifetime.

Command to check the RAM size in Linux OS Terminal

Open a terminal (Ctrl + Alt + T). Run following command to see RAM information in KB (1 KB is equal to 1024 bytes). free Run following command to see RAM information in MB (1 MB is equal to 1024 KB). free -m Run following command to see RAM information in GB (1 GB is equal to 1024 MB). free -g Run following command to see more information about RAM. free -hReference URL: Linux Manual Page

What are some of the most popular modules of Node.js?

There are many most popular, most starred or most downloaded modules in Node.js. Some of them are: expressasyncbrowserifysocket.iobowergulpgrunt

Describe the three levels of data abstraction?

Physical LevelThe lowest level of abstraction describes how data are stored.Logical LevelThe next higher level of abstraction, describes what data are stored in database and what relationship among those data.View LevelThe highest level of abstraction describes only part of entire database.

What are the disadvantages in File Processing System?

Data redundancy & inconsistency.Difficult in accessing database.Data isolation.Data integrity.Concurrent access is not possible.Security Problems.

What is a Database system?

The database and DBMS software together is called as Database system.

What are the advantages of DBMS?

The advantages of Database Management System are: Redundancy is contrliled.Unauthorized access is restricted.Providing multiple user interfaces.Enforcing integrity constraints.Providing backup and recovery.

What is Traceur compiler?

Traceur compiler is a Google project. It compiles ECMAScript Edition [ES6] (including classes, generators and so on) code on the fly to regular Javascript (ECMAScript Edition 5 [ES5]) to make it compatible for the browser. Traceur itself is written in ES6, compiled to ES5.

REPL Terminal in Node.js

REPL stands for Read Eval Print Loop and it represents a computer environment like a Windows Console or Unix/Linux shell where a command is entered and the system responds with an output in an interactive mode. Node.js or Node comes bundled with a REPL environment. It performs the following tasks. Read - Read user's input, parse the input into Javascript data-structure and store in memory. Eval - Takes and evaluates the data structure. Print - Prints the result. Loop - Loops the above command until the user presses Ctrl + C twice. The REPL feature of Node is very useful in experimenting with Node.js codes and to debug Javascript codes.

What is DBMS?

It is a collection of programs that enables user to create and maintain a database. In other words it is general-purpose software that provides the users with the processes of defining, constructing and manipulating the database for various applications.

கார்களின் பின் கண்ணாடியில் உள்ள கோடுகள் எதற்காக?

Windscreen Defogger, used on a vehicle's backglass and/or side view mirrors, often consist of a series of parallel linear resistive conductors in or on the glass. When power is applied, these conductors heat up, thawing ice and evaporating condensation from the glass. These conductors may be composed of a silver-ceramic material printed and baked onto the interior surface of the glass, or may be a series of very fine wires embedded within the glass. The surface-printed variety is prone to damage by abrasion, but can be repaired easily with a conductive paint material.

What are the difference between "==" and "==="?

The == will not check the type of operands whereas === checks both type and value of the operands. Other way of saying is, === will convert the operands to same type and then do the comparison. But === does not do any conversion. It simply return false if any of them in different type.

What is database?

Database is logically a coherent collection of data with some inherent meaning, representing some aspect of real world and which is designed, build and populated with data for a specific purpose.

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New vs Old Income Tax rates - Which is the best?

In this video, you can find information about new and old income tax ratewhich on is the best and to whom?

கொரோனாவிலிருந்து 1.5 கோடி மக்களைக் காப்பாற்ற வேண்டிய நேரம் இது

Time to save 1.5 Crore people from Corona

Batch script code to create Game

Find the code / command here to create game using .bat file. @ECHO OFF title Guess the Number! color 0b SET /a GuessLimit=6 :start cls ECHO Guess what Number I'm thinking of. (0-10) SET /a GuessNum=0 :begin SET /a Answer=%RANDOM% if %Answer% gtr 10 goto begin :Retry SET /p Guess= SET /a GuessNum=%GuessNum%+1 IF %Guess%==cheat goto END IF %Guess% LSS %Answer% ECHO My Number is Higher. IF %Guess% GTR %Answer% ECHO My Number is Lower. IF %Guess%==%Answer% GOTO END IF %GuessNum% GTR %GuessLimit% (start ECHO GOTO Retry :END cls ECHO You are Correct! echo The Answer was %Answer% ECHO It took %GuessNum% Guesses. ECHO. echo Press any key to play again. :) pause>nul goto start

Regional Transport Office (RTO) Tamil Nadu (TN) Codes

The list of Regional Transport Offices (RTOs) in Tamil Nadu and their regions. RTO Code RTO Locations TN-01 Chennai Central (Ayanavaram) TN-02 Chennai North West (Anna Nagar) TN-03 Chennai North East (Tondiarpet) TN-04 Chennai East (Basin Bridge) TN-05 Chennai North (Vyasarpadi) TN-06 Chennai South East (Mandaveli) TN-07 Chennai South (Thiruvanmiyur) TN-09 …

Convert HEX color to RGB values in PHP

Question: What would be a good way to convert hex color values like #ffffff into the single RGB values 255 255 255 using PHP? Solution:Example 1: Check out PHP's hexdec() and dechex() functions. <?php $value = hexdec('ff'); // $value = 255 ?>Example 2: If you want to convert hex to rgb you can use sscanf. <?php $hex = "#ff9900"; list($r, $g, $b) = sscanf($hex, "#%02x%02x%02x"); echo "$hex -> $r $g $b"; // #ff9900 -> 255 153 0 ?>

CSS Code to Customize Webkit Scrollbars

The Different Pieces These are the pseudo elements themselves. The actual parts of the scrollbars. ::-webkit-scrollbar {} ::-webkit-scrollbar-button {} ::-webkit-scrollbar-track {} ::-webkit-scrollbar-track-piece {} ::-webkit-scrollbar-thumb {} ::-webkit-scrollbar-corner {} ::-webkit-resizer {}The Different States These are the pseudo class selectors. They allow for more specific selection of the parts, like when the scrollbar is in different states. :horizontal :vertical :decrement :increment :start :end :double-button :single-button :no-button :corner-present :window-inactiveAbout Pseudo Class Selectores:horizontalThe horizontal pseudo-class applies to any scrollbar pieces that have a horizontal orientation.:verticalThe vertical pseudo-class applies to any scrollbar pieces that have a vertical orientation.:decrementThe decrement pseudo-class applies to buttons and track pieces. It indicates whether or not the button or track piece will decrement the view’s position when…

Setting up browscap.ini in PHP Config File php.ini

You are to use the Full PATH and restart your server when you are done On WindowsFind the php.ini file in the PHP installed directoryPlace the lite_php_browscap.ini file (recommended for web servers) in the directory where php.ini file is foundNow add the following lines in the php.ini config file[browscap] ; browscap = "C:\Program Files (x86)\PHP\lite_php_browscap.ini"On Linux serverIf you are using linux server or cpanel hosting service, find the php.ini file in the home directoryPlace the lite_php_browscap.ini file (recommended for web servers) in the directory where php.ini file is found (or) some other folder you want to kept it.Now add the following lines in the php.ini config file i) if you place the lite_php_browscap.ini in the path "home/etc/" [browscap] ; browscap = "/home/xxxxxx/etc/php_browscap.ini" ii) if you place the lite_php_browscap.ini in the path "home/" where…

Batch script code to create Calculator

Find the code / command here to create calculator using .bat file. @ECHO OFF color 0b :programmer ECHO Calculator ECHO. SET /p UDefine= SET /a UDefine=%UDefine% ECHO = ECHO %UDefine% ECHO. PAUSE ECHO. ECHO *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*- ECHO. goto programmer

How to set up permanent 301 redirect via .htaccess?

A permanent 301 redirect in your .htaccess file lets search engines and others know that an old link has been replaced by a new one. It's the recommended method for directing traffic from an existing page. Some common uses of a 301 .htaccess redirect: Redirect individual files on the same domainAn old file has moved locations, or the information is now contained in a new file.Example:
To redirect individual files, like to newfile.html you can use a 301 redirect like this:
Redirect 301 /oldfile.html /newfile.htmlTo redirect one specific file to another domain such as to 301 /oldfile.html an old domain to a new domainYou've moved a website from an old domain to a new one, and you want any old links to go to the new site.Example:
If you had an old domain such as, and now you …

Convert Time into Timestamp (or) Timestamp into Time in PHP

The easiest (and most reliable) way to store the time in a database table is with a timestamp. It is also the most convenient way of working out time scales as you don't have to do calculations in base 60. In MySQL this is accomplished by the UNIXTIME() function, which can be reversed by using another MySQL function called FROM_UNIXTIME(). However, you can sometimes be left with timestamps in your code and the task of trying to figure out what to do with them. The first problem is trying to convert a timestamp into a date. So here is a PHP function that does this. function timestamp($t = null){ if($t == null) { $t = time(); } return date('Y-m-d H:i:s', $t); } And if you ever have a the opposite problem then here is a PHP function that converts a date string into a timestamp. At the moment the string needs to be in the format YYYY-MM-DD HH:MM:SS, which is what the previous function produced. This isn'…

How to draw smooth curve through N points using javascript HTML5 canvas?

Here is the code for drawing curve from N points: // move to the first point ctx.moveTo(points[0].x, points[0].y); for (i = 1; i < points.length - 2; i ++) { var xc = (points[i].x + points[i + 1].x) / 2; var yc = (points[i].y + points[i + 1].y) / 2; ctx.quadraticCurveTo(points[i].x, points[i].y, xc, yc); } // curve through the last two points ctx.quadraticCurveTo(points[i].x, points[i].y, points[i+1].x,points[i+1].y);

How to get web browser information in PHP?

In order to get web browser information in php use the following code. Without browscap.ini file<?php echo $_SERVER['HTTP_USER_AGENT']; ?>With browscap.ini file<?php $browser = get_browser(null, true); echo "<pre>"; print_r($browser); echo "</pre>"; ?>

How to check whether mail sent successfully or not in PHP?

Use the following code to check the sent status of php mail function. <?php $to = ""; $subject = "This is subject"; $message = "This is HTML message."; $message .= "This is headline."; $header = " \r\n"; $header .= " \r\n"; $header .= "MIME-Version: 1.0\r\n"; $header .= "Content-type: text/html\r\n"; $retval = mail ($to,$subject,$message,$header); if( $retval == true ) { echo "Message sent successfully..."; }else { echo "Message could not be sent..."; } ?>

How to output text file with line breaks in PHP?

To convert the plain text line breaks to html line breaks, try this: $fh = fopen("filename.txt", 'r'); $pageText = fread($fh, 25000); echo nl2br($pageText);Note: the nl2br function wraps the text.

Get the full URL of current page in PHP

Have a look at $_SERVER['REQUEST_URI'], i.e. $actual_link = "http://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]"; (Note that the double quoted string syntax is perfectly correct) If you want to support both HTTP and HTTPS, you can use $actual_link = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? "https" : "http") . "://$_SERVER[HTTP_HOST]$_SERVER[REQUEST_URI]"; Editor’s note: using this code has security implications. The client can set HTTP_HOST and REQUEST_URI to any arbitrary value it wants.

Can you break a wooden stick using newspaper?


CSS Code to Remove Border (Outline) Around Text / Input Boxes on Focus

This border is used to show that the element is focused (i.e. you can type in the input or click the button with Enter key). You can remove it, though: textarea:focus, input:focus { outline: none; } Chrome browser will also apply highlighting to other elements such as DIV's used as modals. To prevent the highlight on those and all other elements as well, you can do: *:focus { outline: none; }

How to enable Cross Origin Access through .htaccess File

Copy and paste the below code in the .htaccess file to enable Cross Origin Access to files. # Access-Control-Allow-Origin <IfModule mod_headers.c> Header set Access-Control-Allow-Origin "*" <IfModule> If you don’t have .htaccess file in your web server, create it and add the above mentioned code. Warning: This will provide direct access to files from your domain to other domains.

CSS Code to Disable Highlighting Text Selection

.no-select { -webkit-touch-callout: none !important; /* iOS Safari */ -webkit-user-select: none !important; /* Chrome/Safari/Opera */ -khtml-user-select: none !important; /* Konqueror */ -moz-user-select: none !important; /* Firefox */ -ms-user-select: none !important; /* Internet Explorer/Edge */ user-select: none !important; /* Non-prefixed version, currently not supported by any browser */ } Note: The user-select is currently supported in all browsers except Internet Explorer 9 and earlier versions.