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Q:

What are the new features provided in HTML5?

Answer

Some of the new features provided in HTML5 are:


- It provides support for local storage


- New form controls, like calendar, date, time, email, url, search


- <canvas> element is provided to facilitate 2D drawing


- The <video> and <audio> elements are provided for media playback


- New content-specific elements are provided. For e.g. <article>, <header>, <footer>, <nav>, <section>

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Subject: Web Technology

Q:

Write SQL Query to find second highest salary of Employee.

Answer

There are many ways to find second highest salary of Employee in SQL, you can either use SQL Join or Subquery to solve this problem. Here is SQL query using Subquery :


SELECT MAX(Salary) from Employee WHERE Salary NOT IN (select MAX(Salary) FROM Employee );

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Subject: SQL

Q:

Write an SQL Query find number of employees according to gender whose DOB is between 01/01/1960 to 31/12/1975.

Answer

SELECT COUNT(*), sex from Employees  WHERE  DOB BETWEEN ‘01/01/1960 ' AND ‘31/12/1975’  GROUP BY sex;

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Subject: SQL

Q:

find all Employee records containing the word "Joe", regardless of whether it was stored as JOE, Joe, or joe.

Answer

SELECT  * from Employees  WHERE  upper(EmpName) like upper('joe%');

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Subject: SQL

Q:

Write a SQL Query to find year from date.

Answer

SELECT YEAR(GETDATE()) as "Year";

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Subject: SQL

Q:

Write an SQL Query to check whether date passed to Query is date of given format or not.

Answer

SQL has IsDate() function which is used to check passed value is date or not of specified format ,it returns 1(true) or 0(false) accordingly.


SELECT  ISDATE('1/08/13') AS "MM/DD/YY";


It will return 0 because passed date is not in correct format.

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Subject: SQL

Q:

How to rebuild Master Database?

Answer

Master database is system database and it contains information about running server's configuration. When SQL Server 2005 is installed it usually creates master, model, msdb, tempdb resource and distribution system database by default. Only Master database is th one which is absolutely must have database. Without Master database SQL Server cannot be started. This is the reason it is extremely important to backup Master database.


To rebuild the Master database, Run Setup.exe, verify, and repair a SQL Server instance, and rebuild the system databases. This procedure is most often used to rebuild the master database for a corrupted installation of SQL Server.

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Subject: SQL

Q:

What is Aggregate Functions?

Answer

Aggregate functions perform a calculation on a set of values and return a single value. Aggregate functions ignore NULL values except COUNT function. HAVING clause is used, along with GROUP BY, for filtering query using aggregate values.


Following functions are aggregate functions. 


AVG, MIN CHECKSUM_AGG, SUM, COUNT, STDEV, COUNT_BIG, STDEVP, GROUPING, VAR, MAX. VARP

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Subject: SQL