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

  

  

  

  

  

What is DML?

  

  

  

  

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

  

  

  

  

Which command is used on 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 "LastName" is alphabetically between (and including) "Hansen" and "Pettersen"?

  

  

  

Transactions are used to treat sets of SQL statements atomically.

  

  

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

  

  

  

  

  

Which of the following is not a character manipulation function?

  

  

  

  

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

  

  

  

A SELECT command without a WHERE clause returns?

  

  

  

  

The USE command?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Where is metadata stored in MySQL?

  

  

  

  

Enum values are stored according to their index numbers

  

  

What is Column?

  

  

  

  

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

  

  

  

  

  

A NULL value is treated as a blank or 0.

  

  

  

How to view all Triggers in MySQL?

  

  

  

  

How is structure of a table got in MySQL?

  

  

  

  

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

  

  

  

  

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:

  

  

  

  

  

What is Row?

  

  

  

  

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

  

  

  

Which statement is used to access an existing Database?

  

  

  

  

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

  

  

  

  

  

A table may be joined to itself.

  

  

  

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

  

  

  

  

Which function used to get the current time in mysql?

  

  

  

What does SQL stand for?

  

  

  

  

Commands passed to the MySQL daemon are written in.

  

  

  

  

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

  

  

  

  

Which of the following is not a MySQL Operator?

  

  

  

  

Which SQL statement is used to insert a new 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 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?

  

  

  

  

Which of the following is not a valid aggregate function?

  

  

  

  

What kind of replication is supported by the MySQL server?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

The “Mysql command line tool” formats are bounded by

  

  

  

  

Which of these is not a valid name for a column

  

  

  

  

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

  

  

  

  

When do we use a HAVING clause?

  

  

  

  

How many TRIGGERS are allowed in MySql table?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Which of the following is not an SQL 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

  

  

  

  

  

What is DCL?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

  

Can DISTINCT command be used for more than one column?

  

  

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

  

  

  

  

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

  

  

  

  

MySQL is

  

  

  

  

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

  

  

  

  

  

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

  

  

You are required to buy a license for MySQL if

  

  

  

  

  

Which of the following is NOT supported by MySQL

  

  

  

  

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

  

  

  

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

  

  

  

  

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

  

  

  

  

MySQL supports the complete SQL99 standard

  

  

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

  

  

  

  

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 the following is not an SQL aggregate function?

  

  

  

  

  

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

  

  

  

  

Which SQL statement is used to delete 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.

  

  

  

  

Which of the following is NOT available in MySQL?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

How much storage space does DATETIME require?

  

  

  

  

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

  

  

  

  

BLOB data type can have default column value.

  

  

Can I call a trigger directly called from an application?

  

  

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

  

  

  

How much character are allowed to create database name?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

A user with RELOAD priveliges can

  

  

  

  

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

  

  

  

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

  

  

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

  

  

  

  

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

  

  

  

  

Which SQL statement is used to return only different 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.

  

  

What is a candidate key?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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