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”

  

  

  

  

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"?

  

  

  

What is Column?

  

  

  

  

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

  

  

  

  

  

Can DISTINCT command be used for more than one column?

  

  

Which of the following is not a MySQL Operator?

  

  

  

  

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

  

  

MySQL supports the complete SQL99 standard

  

  

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

  

  

  

  

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

  

  

  

  

What is Row?

  

  

  

  

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

  

  

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

  

  

  

Can joins be nested?

  

  

The program called mysql is

  

  

  

  

  

Commands passed to the MySQL daemon are written in.

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

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

  

  

  

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

  

  

  

  

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

  

  

  

  

How much character are allowed to create database name?

  

  

  

  

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

  

  

  

  

A table may be joined to itself.

  

  

  

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

  

  

  

  

MySQL runs on which operating systems?

  

  

  

  

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

  

  

  

  

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

  

  

  

BLOB data type can have default column value.

  

  

Which of the following is not a valid aggregate function?

  

  

  

  

What is DCL?

  

  

  

  

Which of the following is NOT supported by MySQL

  

  

  

  

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

  

  

  

  

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

  

  

  

  

A SELECT command without a WHERE clause returns?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

A NULL value is treated as a blank or 0.

  

  

  

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

  

  

  

  

What does SQL stand for?

  

  

  

  

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

  

  

  

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

  

  

  

  

If you want to undo a GRANT, you should use

  

  

  

  

  

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

  

  

  

  

When do we use a HAVING clause?

  

  

  

  

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

  

  

  

  

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 kind of replication is supported by the MySQL server?

  

  

  

  

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

  

  

  

  

Which of the following is not an SQL aggregate function?

  

  

  

  

  

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 is NOT available in MySQL?

  

  

  

  

A user with RELOAD priveliges can

  

  

  

  

How to view all Triggers in MySQL?

  

  

  

  

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

  

  

What is DML?

  

  

  

  

Which statement is used to access an existing 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 commands should be used to create a database named “student”?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

What is DDL?

  

  

  

  

The result of a SELECT statement can contain duplicate rows.

  

  

  

MySQL comes with as standard with client libraries for:

  

  

  

  

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

  

  

  

  

Enum values are stored according to their index numbers

  

  

With SQL, how do you select all the records from a table named "Persons" where the "FirstName" is "Aru" and the "LastName" is "Sum"?

  

  

  

  

Which function used to get the current time in mysql?

  

  

  

Where is metadata stored in MySQL?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

Which of the following is not a character manipulation function?

  

  

  

  

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

  

  

  

  

  

Which of the following is not an SQL aggregate function?

  

  

  

  

  

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

  

  

  

  

  

Transactions are used to treat sets of SQL statements atomically.

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

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

  

  

  

  

The "father" of MySQL is

  

  

  

  

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

  

  

  

  

What is Table?

  

  

  

  

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

  

  

  

  

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

  

  

  

  

  

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

  

  

  

  

What is a candidate key?

  

  

  

  

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

  

  

  

  

  

The “Mysql command line tool” formats are bounded by

  

  

  

  

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

  

  

  

  

Can I call a trigger directly called from an application?

  

  

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