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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Which of these field types would be best to hold a .jpg image?

  

  

  

  

What does SQL stand for?

  

  

  

  

The "father" of MySQL is

  

  

  

  

In a LIKE clause, you can ask for any 6 letter value by writing?

  

  

  

  

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

  

  

  

  

A table may be joined to itself.

  

  

  

With SQL, how can you return the number of records in the "Persons" table?

  

  

  

  

What is DCL?

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

Which of the following can add a row to a table?

  

  

  

  

A view is nothing but a ________ table or a stored query

  

  

  

  

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

  

  

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

  

  

  

  

What kind of replication is supported by the MySQL server?

  

  

  

  

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

  

  

What is DML?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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  

  

  

  

  

A SELECT command without a WHERE clause returns?

  

  

  

  

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

  

  

  

  

In PHP in order to access MySQL database you will use:

  

  

  

  

BLOB data type can have default column value.

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Which SQL statement is used to return only different values?

  

  

  

  

You are required to buy a license for MySQL if

  

  

  

  

  

The USE command?

  

  

  

  

Which SQL statement is used to update data in a database?

  

  

  

  

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

  

  

  

  

Which of the following is NOT supported by MySQL

  

  

  

  

MySQL supports the complete SQL99 standard

  

  

The “Mysql command line tool” formats are bounded by

  

  

  

  

Enum values are stored according to their index numbers

  

  

How many TRIGGERS are allowed in MySql table?

  

  

  

  

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

  

  

  

  

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

  

  

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

  

  

  

  

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

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

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.

  

  

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

  

  

  

  

How to view all Triggers in MySQL?

  

  

  

  

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?

  

  

  

  

Which of these is not a valid name for a column

  

  

  

  

What is DDL?

  

  

  

  

MySQL Access security is controlled through?

  

  

  

  

On executing DELETE command, if you get an error "foreign key constraint" what does it imply?

  

  

  

  

Which of the following is not a character manipulation function?

  

  

  

  

What is Row?

  

  

  

  

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

  

  

  

  

  

The result of a SELECT statement can contain duplicate rows.

  

  

  

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

  

  

  

  

  

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

  

  

  

  

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"?

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Transactions are used to treat sets of SQL statements atomically.

  

  

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

  

  

How much storage space does DATETIME require?

  

  

  

  

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"?

  

  

  

Can I call a trigger directly called from an application?

  

  

With SQL, how can you delete the records where the "FirstName" is "Peter" in the Persons Table?

  

  

  

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

  

  

  

  

USE keyword is used to select a ___________

  

  

  

  

MySQL runs on which operating systems?

  

  

  

  

How much character are allowed to create database name?

  

  

  

  

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

  

  

  

  

Which of the following is NOT available in MySQL?

  

  

  

  

The program called mysql is

  

  

  

  

  

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

  

  

  

  

If you want to undo a GRANT, you should use

  

  

  

  

  

How is structure of a table got in MySQL?

  

  

  

  

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

  

  

  

  

Commands passed to the MySQL daemon are written in.

  

  

  

  

Which of the following is not a MySQL Operator?

  

  

  

  

Can joins be nested?

  

  

What is Table?

  

  

  

  

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

  

  

  

  

What type of lock will deny users any access to a table?

  

  

  

  

  

What is Column?

  

  

  

  

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

  

  

  

  

Which of the following is not a valid aggregate function?

  

  

  

  

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

  

  

  

  

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

  

  

  

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

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

What's the difference between the DESCRIBE and SHOW FIELDS FROM commands?

  

  

  

Which of the following is not an SQL aggregate function?

  

  

  

  

  

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

  

  

  

  

Can DISTINCT command be used for more than one column?

  

  

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