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 the following is not an SQL aggregate function?

  

  

  

  

  

The "father" of MySQL is

  

  

  

  

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

  

  

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

  

  

  

  

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  

  

  

  

  

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

  

  

  

  

MySql | Which of the following is available in MySQL:

  

  

  

  

  

Commands passed to the MySQL daemon are written in.

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

How much storage space does DATETIME require?

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

  

What kind of replication is supported by the MySQL server?

  

  

  

  

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

  

  

The “Mysql command line tool” formats are bounded by

  

  

  

  

MySQL comes with as standard with client libraries for:

  

  

  

  

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

  

  

  

Which of the following is NOT supported by MySQL

  

  

  

  

When do we use a HAVING clause?

  

  

  

  

Which function used to get the current time in mysql?

  

  

  

What is DCL?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Can I call a trigger directly called from an application?

  

  

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"?

  

  

  

Which command is used for showing current date and time 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" is "Peter"?

  

  

  

  

Which of the following is not an SQL aggregate function?

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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"?

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

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

  

  

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

  

  

  

  

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

  

  

  

  

Which of these is not a valid name for a column

  

  

  

  

Which SQL statement is used to return only different values?

  

  

  

  

What is Table?

  

  

  

  

Which of the following is NOT available in MySQL?

  

  

  

  

How much character are allowed to create database name?

  

  

  

  

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.

  

  

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

  

  

  

  

What is Row?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

  

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

  

  

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

  

  

  

  

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

  

  

  

  

How do I find out all databases starting with ‘test to which I have access to?

  

  

  

  

What is DDL?

  

  

  

  

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

  

  

  

  

MySQL is

  

  

  

  

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

  

  

  

  

Transactions are used to treat sets of SQL statements atomically.

  

  

Where is metadata stored in MySQL?

  

  

  

  

A table may be joined to itself.

  

  

  

Which of the following is not a MySQL Operator?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

The program called mysql is

  

  

  

  

  

A NULL value is treated as a blank or 0.

  

  

  

How can you change "Hansen" into "Nilsen" in the "LastName" column in the Persons table?

  

  

  

  

MySQL supports the complete SQL99 standard

  

  

What is a candidate key?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

What is DML?

  

  

  

  

You are required to buy a license for MySQL if

  

  

  

  

  

Can joins be nested?

  

  

Which of the following is not a character manipulation function?

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

  

If you want to undo a GRANT, you should use

  

  

  

  

  

Can I define multiple unique constraints on a table?

  

  

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

  

  

  

  

Enum values are stored according to their index numbers

  

  

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

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

BLOB data type can have default column value.

  

  

A user with RELOAD priveliges can

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

Can DISTINCT command be used for more than one column?

  

  

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

  

  

  

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

  

  

  

A SELECT command without a WHERE clause returns?

  

  

  

  

How is structure of a table got in MySQL?

  

  

  

  

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

  

  

  

  

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