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 authentications are required for login into Mysql command line tool?

  

  

  

  

How much storage space does DATETIME require?

  

  

  

  

Which of the following is not an SQL aggregate function?

  

  

  

  

  

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

  

  

  

  

What is DDL?

  

  

  

  

A user with RELOAD priveliges can

  

  

  

  

Which of the following is NOT supported by MySQL

  

  

  

  

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

  

  

  

  

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

  

  

Enum values are stored according to their index numbers

  

  

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

  

  

  

  

Which SQL statement is used to return only different values?

  

  

  

  

How is structure of a table got in MySQL?

  

  

  

  

MySQL is

  

  

  

  

Can I define multiple unique constraints on a table?

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Commands passed to the MySQL daemon are written in.

  

  

  

  

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

  

  

  

What is a candidate key?

  

  

  

  

What is Table?

  

  

  

  

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

  

  

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"?

  

  

  

  

  

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

  

  

  

  

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?

  

  

  

  

MySQL supports the complete SQL99 standard

  

  

The “Mysql command line tool” formats are bounded by

  

  

  

  

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

  

  

  

  

Can joins be nested?

  

  

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 a character manipulation function?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

BLOB data type can have default column value.

  

  

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

  

  

  

  

Transactions are used to treat sets of SQL statements atomically.

  

  

A NULL value is treated as a blank or 0.

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Which of the following is not a valid aggregate function?

  

  

  

  

The result of a SELECT statement can contain duplicate rows.

  

  

  

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

  

  

  

  

  

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

  

  

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

  

  

  

  

A table may be joined to itself.

  

  

  

Which of the following is not an SQL aggregate function?

  

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

  

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

  

  

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

  

  

Can I call a trigger directly called from an application?

  

  

Can DISTINCT command be used for more than one column?

  

  

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

  

  

  

  

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

  

  

  

  

The "father" of MySQL is

  

  

  

  

Which of the following is NOT available in MySQL?

  

  

  

  

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

  

  

  

  

How much character are allowed to create database name?

  

  

  

  

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

  

  

  

  

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.

  

  

MySql | Which of the following is available in MySQL:

  

  

  

  

  

You are required to buy a license for MySQL if

  

  

  

  

  

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

  

  

  

  

Which of these is not a valid name for a column

  

  

  

  

When do we use a HAVING clause?

  

  

  

  

What is DCL?

  

  

  

  

Where is metadata stored in MySQL?

  

  

  

  

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

  

  

  

  

What is Column?

  

  

  

  

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

  

  

  

  

  

MySQL runs on which operating systems?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

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

  

  

  

  

  

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

  

  

  

  

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  

  

  

  

  

What is DML?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

How many TRIGGERS are allowed in MySql table?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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