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

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

MySQL is

  

  

  

  

What is Table?

  

  

  

  

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  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

A table may be joined to itself.

  

  

  

Which of the following is not a valid aggregate function?

  

  

  

  

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

  

  

  

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

  

  

  

  

How to view all Triggers in MySQL?

  

  

  

  

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

  

  

  

  

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.

  

  

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

  

  

  

  

Which one will delete the table data as well as table structure?

  

  

Which of these is not a valid name for a column

  

  

  

  

The “Mysql command line tool” formats are bounded by

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

The "father" of MySQL is

  

  

  

  

Can I define multiple unique constraints on a table?

  

  

MySQL supports the complete SQL99 standard

  

  

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

  

  

  

  

Which of the following is NOT available in MySQL?

  

  

  

  

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

  

  

  

  

How is structure of a table got in MySQL?

  

  

  

  

Commands passed to the MySQL daemon are written in.

  

  

  

  

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

  

  

  

  

What kind of replication is supported by the MySQL server?

  

  

  

  

Which SQL statement is used to return only different values?

  

  

  

  

A NULL value is treated as a blank or 0.

  

  

  

Which of the following is not an SQL aggregate function?

  

  

  

  

  

What does SQL stand for?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

  

MySQL comes with as standard with client libraries for:

  

  

  

  

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"?

  

  

  

  

  

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

  

  

  

  

How much storage space does DATETIME require?

  

  

  

  

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

  

  

  

  

A user with RELOAD priveliges can

  

  

  

  

Can DISTINCT command be used for more than one column?

  

  

Can I call a trigger directly called from an application?

  

  

USE keyword is used to select a ___________

  

  

  

  

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

  

  

  

  

MySQL Access security is controlled through?

  

  

  

  

You are required to buy a license for MySQL if

  

  

  

  

  

What is Column?

  

  

  

  

How much character are allowed to create database name?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Which statement is used to access an existing Database?

  

  

  

  

When do we use a HAVING clause?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

The result of a SELECT statement can contain duplicate rows.

  

  

  

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

  

  

  

  

Where is metadata stored in MySQL?

  

  

  

  

A SELECT command without a WHERE clause returns?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

  

Which of the following is not an SQL aggregate function?

  

  

  

  

  

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

  

  

  

MySql | Which of the following is available in MySQL:

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

What is DDL?

  

  

  

  

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

  

  

  

  

MySQL runs on which operating systems?

  

  

  

  

The USE command?

  

  

  

  

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

  

  

  

  

If you want to undo a GRANT, you should use

  

  

  

  

  

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

  

  

  

  

BLOB data type can have default column value.

  

  

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

  

  

  

  

The “Mysql command line tool” format the results in which of the following format:

  

  

  

  

Transactions are used to treat sets of SQL statements atomically.

  

  

Which function used to get the current time in mysql?

  

  

  

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

  

  

  

  

How many TRIGGERS are allowed in MySql table?

  

  

  

  

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

  

  

  

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

  

  

  

Which of the following is NOT supported by MySQL

  

  

  

  

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

  

  

  

  

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