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

  

  

  

  

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

  

  

  

  

What is Row?

  

  

  

  

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

  

  

What is a candidate key?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

A NULL value is treated as a blank or 0.

  

  

  

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

  

  

  

  

MySql | Which of the following is available in MySQL:

  

  

  

  

  

MySQL comes with as standard with client libraries for:

  

  

  

  

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

  

  

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

  

  

  

  

Commands passed to the MySQL daemon are written in.

  

  

  

  

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

  

  

  

  

  

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

  

  

  

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

  

  

  

  

The "father" of MySQL is

  

  

  

  

What is DDL?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

The result of a SELECT statement can contain duplicate rows.

  

  

  

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

  

  

  

  

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

  

  

  

  

What does SQL stand for?

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

Transactions are used to treat sets of SQL statements atomically.

  

  

Where is metadata stored in MySQL?

  

  

  

  

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

  

  

  

  

Which of the following is NOT available in MySQL?

  

  

  

  

Which of the following is not an SQL aggregate function?

  

  

  

  

  

MySQL supports the complete SQL99 standard

  

  

If you want to undo a GRANT, you should use

  

  

  

  

  

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

  

  

  

  

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

  

  

  

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

  

  

  

  

Which SQL statement is used to return only different values?

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

  

You are required to buy a license for MySQL if

  

  

  

  

  

Can I define multiple unique constraints on a table?

  

  

What is Column?

  

  

  

  

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

  

  

  

  

The program called mysql is

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Which of these is not a valid name for a column

  

  

  

  

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

  

  

  

  

How much character are allowed to create database name?

  

  

  

  

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

  

  

  

  

Can DISTINCT command be used for more than one column?

  

  

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

  

  

  

  

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?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

A SELECT command without a WHERE clause returns?

  

  

  

  

What is DCL?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

What is Table?

  

  

  

  

How is structure of a table got in MySQL?

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

When do we use a HAVING clause?

  

  

  

  

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

  

  

  

  

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"?

  

  

  

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

  

  

Which of the following is not a valid aggregate 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

  

  

  

  

  

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

  

  

  

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

  

  

  

  

How many TRIGGERS are allowed in MySql table?

  

  

  

  

Which of the following is not a MySQL Operator?

  

  

  

  

BLOB data type can have default column value.

  

  

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

  

  

  

  

Enum values are stored according to their index numbers

  

  

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  

  

  

  

  

MySQL Access security is controlled through?

  

  

  

  

MySQL is

  

  

  

  

Which of the following is not a character manipulation function?

  

  

  

  

Which of the following is not an SQL aggregate function?

  

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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.

  

  

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

  

  

  

  

The USE command?

  

  

  

  

A user with RELOAD priveliges can

  

  

  

  

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

  

  

  

  

MySQL runs on which operating systems?

  

  

  

  

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

  

  

  

  

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