Database - Sql Test

Test Instructions :

1. The Test is 1hr duration.
2. The Test Paper consists of 30 questions. The maximum marks are 30.
3. All the questions are multiple choice question type with three options for each question.
4. Out of the three options given for each question, only one option is the correct answer.
5. Each question is allotted 1 mark for each correct response.
6. 0.25 will be deducted for incorrect response of each question.
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Can I define multiple unique constraints on a table?

  

  

Which of the following is not a valid aggregate function?

  

  

  

  

Can DISTINCT command be used for more than one column?

  

  

In a SELECT with a GROUP BY clause, a WHERE clause, and a HAVING clause, the WHERE conditions are applied before the HAVING conditions.

  

  

  

  

mysql_pconnect() is used to make a persistent connection to the database which means a SQL link that do not close when the execution of your script ends.

  

  

What does SQL stand for?

  

  

  

  

Which SQL statement is used to extract data from a database?

  

  

  

  

  

With SQL, how do you select all the records from a table named "Persons" where the "FirstName" is "Aru" and the "LastName" is "Sum"?

  

  

  

  

How to view all Triggers in MySQL?

  

  

  

  

With SQL, how do you select a column named "FirstName" from a table named "Persons"?

  

  

  

Which SQL statement is used to insert a new data in a database?

  

  

  

  

With SQL, how do you select all the columns from a table named "Persons"?

  

  

  

  

Which of the following is the correct SQL statement to use to remove rows from a table?

  

  

  

  

Which of the following file extension is a valid MyISAM file extension?

  

  

  

  

One of the early proponents of relational database who laid down many of the principles we use to this day was:

  

  

  

  

  

What SQL clause is used to restrict the rows returned by a query?

  

  

  

  

Which command is used for taking “server side help” in Mysql command line tool

  

  

  

  

What is Table?

  

  

  

  

How many distinct, different values can you hold in an enum field?

  

  

  

  

Sometimes the expression "select count(*)" will return fewer rows than the expression "select count(value)".

  

  

How much character are allowed to create database name?

  

  

  

  

Where is metadata stored in MySQL?

  

  

  

  

BLOB data type can have default column value.

  

  

With SQL, how do you select all the records from a table named "Persons" where the "LastName" is alphabetically between (and including) "Hansen" and "Pettersen"?

  

  

  

The “Mysql command line tool” formats are bounded by

  

  

  

  

Which of the following is not a character manipulation function?

  

  

  

  

Which command is used for showing current date and time in Mysql command line tool?

  

  

  

  

What MySQL property is used to create a surrogate key in MySQL?

  

  

  

  

With SQL, how do you select all the records from a table named "Persons" where the value of the column "FirstName" is "Peter"?

  

  

  

  

Which SQL statement is used to return only different values?

  

  

  

  

To use MySQL on your computer, you'll need?

  

  

  

  

What is Column?

  

  

  

  

How is structure of a table got in MySQL?

  

  

  

  

What will happen at the end of the following sequence of SQL commands? BEGIN TRANSACTION DELETE FROM MYTABLE WHERE ID=1 DELETE FROM OTHERTABLE ROLLBACK TRANSACTION

  

  

  

  

  

A table may be joined to itself.

  

  

  

Which of the following is not a MySQL Operator?

  

  

  

  

A user with RELOAD priveliges can

  

  

  

  

If you're writing a client using the C language API, your source code should include the following line at the top:

  

  

  

  

________ is an open source DBMS product that runs on UNIX, Linux and Windows.

  

  

  

  

Use the .............. to delete the data inside the table, and not the table itself?

  

  

  

  

Mysql command line tool is used to show “how many rows are returned and how long SQL command took to execute”

  

  

  

  

When do we use a HAVING clause?

  

  

  

  

MySql | Which of the following is available in MySQL:

  

  

  

  

  

What MySQL property is used to create a surrogate key in MySQL?

  

  

  

  

In a LIKE clause, you can could ask for any value ending in "qpt" by writing

  

  

  

  

What is Row?

  

  

  

  

Which of the following DBMSs do not have a native PHP extension?

  

  

  

  

  

Which of these is a valid call to a function (watch the spaces carefully!)

  

  

  

  

The main MySQL program that does all the data handling is called?

  

  

  

  

What is DCL?

  

  

  

  

If an ENUM column is declared NOT NULL, its default value is the first element of the list of allowed values.

  

  

  

  

How much storage space does DATETIME require?

  

  

  

  

Which of the following is NOT available in MySQL?

  

  

  

  

USE keyword is used to select a ___________

  

  

  

  

Which command is used on Mysql command line tool to return to window command shell?

  

  

  

  

MySQL supports the complete SQL99 standard

  

  

Which is the default order of sort in ORDER BY clause?

  

  

The USE command?

  

  

  

  

Which of the following is NOT supported by MySQL

  

  

  

  

With SQL, how can you insert "Olsen" as the "LastName" in the "Persons" table?

  

  

  

What does the DESC keyword do in the following query? SELECT * FROM MY_TABLE WHERE ID > 0 ORDER BY ID, NAME DESC

  

  

  

  

  

Which SQL statement is used to delete data from a database?

  

  

  

  

SQL is not case sensitive. SELECT is the same as select.

  

  

Internally information is held in tables. Which of these is NOT a valid format:

  

  

  

  

  

What is the command for counting all the rows in a table in MySQL?

  

  

  

  

Which authentications are required for login into Mysql command line tool?

  

  

  

  

What is an open source DBMS product that runs on UNIX, Linux and Windows

  

  

  

  

Which of the following ways below are the correct way to get the current date?

  

  

  

  

Which of the following is used to delete an entire MYSQL database?

  

  

  

  

What is DML?

  

  

  

  

Which of these is not a valid name for a column

  

  

  

  

With SQL, how can you insert a new record into the "Persons" table?

  

  

  

An outer join requires each record in the two joined tables to have a matching record.

  

  

  

  

Which of these commands will delete a table called XXX if you have appropriate authority:

  

  

  

  

Which of the following is not an SQL aggregate function?

  

  

  

  

  

What is DDL?

  

  

  

  

With SQL, how do you select all the records from a table named "Persons" where the value of the column "FirstName" starts with an "a"?

  

  

  

  

  

MySQL is

  

  

  

  

What kind of replication is supported by the MySQL server?

  

  

  

  

What is a candidate key?

  

  

  

  

To remove duplicate rows from the result set of a SELECT use the following keyword:

  

  

  

  

Which of the following commands should be used to create a database named “student”?

  

  

  

  

Which of these field types would be best to hold a film title?

  

  

  

  

Transactions are used to treat sets of SQL statements atomically.

  

  

User() fucntion returns the current users user name and ___________

  

  

  

  

Which command is used in Mysql command line tool to return to window command shell?

  

  

  

  

The "father" of MySQL is

  

  

  

  

Primary Key does allow the Null Values. where as in Unique key doesn't accept the Null values.

  

  

With SQL, how can you return all the records from a table named "Persons" sorted descending by "FirstName"?

  

  

  

  

Which statement is used to access an existing Database?

  

  

  

  

The result of a SELECT statement can contain duplicate rows.

  

  

  

How can we get the number of records or rows in a table?

  

  

  

  

You are required to buy a license for MySQL if

  

  

  

  

  

The program called mysql is

  

  

  

  

  

MySQL comes with as standard with client libraries for:

  

  

  

  

A NULL value is treated as a blank or 0.

  

  

  

Which SQL keyword is used to sort the result-set?

  

  

  

  

If you want to undo a GRANT, you should use

  

  

  

  

  

Given an employees table as follows:   emp_id emp_name 1 Brush 2 Jerrin  what value will be return by below query ? Select count(*) from employees  

  

  

  

  

The ............. statement is used to delete a table.

  

  

  

  

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