SQL/SQL MCQ SET 17 Sample Test,Sample questions

Question:
‘2341’ is a ____________

1.integer

2.floating point

3.hexadecimal

4.string


Question:
“INSERT” is same as “UPDATE”?

1.NO

2.YES

3.May be

4.None of the mentioned


Question:
Character data can be stored as ______________

1.Fixed length string

2.Variable length string

3.Either Fixed or Variable length string

4.None of the mentioned


Question:
If a string is to be converted to a number, it is converted into a _____________

1.double precision floating point

2.single precision floating point

3.decimal integer

4.hexadecimal integer


Question:
If ANSI_QUOTES is enabled, MySQL treats the double quotes as ________________

1.identifier-quoting character

2.string-quoting character

3.hexadecimal

4.string


Question:
In the following SQL query, what does “person” stands for?

1.Composite attributes

2.Multivalued attributes

3.Table name

4.None of the mentioned


Question:
Is it necessary to insert the value in each column of the table?

1.Yes

2.No

3.Depends on the server

4.Depends on the usage of the table


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

1.TRUE

2.FALSE

3.Undetermined

4.Depend


Question:
Numbers prefixed with ‘0x’ are in base __________

1.8

2.16

3.32

4.64


Question:
The BIGINT precision is of bit _________

1.32

2.64

3.128

4.16


Question:
The bit-field values are prefixed with __________

1.0b

2.0bit

3.bit-

4.‘bit’


Question:
The DECIMAL used for expressions containing only exact values with fractional part is of digit precision _________

1.32

2.64

3.65

4.16


Question:
The escape sequence for carriage return is ___________

1.‘c’

2.‘ ’

3.‘’

4.‘z’


Question:
The mantissa in -1.58E5 is __________

1.-1.58

2.1.58

3.E

4.5


Question:
The maximum length of the char columns is ____________

1.255 bytes

2.65, 535 bytes

3.256 bytes

4.None of the mentioned


Question:
The number of legal hexadecimal values among 0x0a, 0x0A, 0X0a and 0X0A is _________

1.1

2.2

3.3

4.4


Question:
To measure the length of a string in bytes, the operator used is __________

1.CHAR_LENGTH()

2.LENGTH()

3.LEN()

4.SIZE()


Question:
What default value gets stored in columns of the table?

1.NULL

2.0

3.1

4.-1


Question:
What is the default value of column?

1.NULL

2.0

3.-1

4.Undefined


Question:
What is the meaning of “REFERENCES” in table definition?

1.Primary key

2.NULL

3.Foreign Key

4.A ”foreign Key” belong to this particular table


Question:
What is the role of “CONSTRAINS” in defining a table in Mysql?

1.Declaring primary key

2.Declaring Foreign Key

3.Restrictions on columns

4.All of the mentioned


Question:
What is used to produce a new string from an old string in the desired character set?

1.Introducers

2.CONVERT()

3.CONVERTER()

4.CONVERTS()


Question:
Which among the following are the correct definitions for “NULL” in Mysql?

1.Absence of value

2.Unknown

3.Empty set

4.All of the mentioned


Question:
Which among the following is the correct syntax for creating table?

1.CREATE TABLE name;

2.CREATE name;

3.CREATE TABLE

4.All of the mentioned


Question:
Which among the following is the correct syntax for defining “Constraint Check” in Mysql?

1.gender char(1) check( gender IN (‘M’, ‘F’)),

2.gender char (1) check,

3.gender char (1) check ( gender ),

4.none of the mentioned


Question:
Which among the following is the correct syntax for defining “ENUM” in Mysql?

1.gender ENUM (‘M’, ‘F’),

2.gender ENUM,

3.gender ENUM ( ),

4.none of the mentioned


Question:
Which among the following is the correct syntax for modifying the definition of an existing table?

1.ALTER TABLE person MODIFY person_id SMALLINT UNSIGNED AUTO_INCREMENT;

2.ALTER TABLE person person_id SMALLINT UNSIGNED AUTO_INCREMENT;

3.ALTER TABLE person MODIFY person_id ;

4.ALTER TABLE person


Question:
Which among the following is the correct syntax for showing all tables in the database?

1.SHOWS TABLES

2.SHOW TABLE

3.SHOW

4.SHOWS TABLES;


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

1.Username

2.Password

3.Only Username

4.Both Username and Password


Question:
Which character set variable indicates the character set used for storing identifiers?

1.character_set_system

2.character_set_server

3.collation_server

4.character_set_database


Question:
Which clause is used to rename the existing table?

1.RENAME

2.MODIFY

3.ALTER

4.None of the mentioned


Question:
Which Clause is used to select a particular row from the set of row in an existing table?

1.WHERE

2.FROM

3.ALTER

4.None of the mentioned


Question:
Which Clause is used to select a particular table in Mysql?

1.WHERE

2.SELECT

3.FROM

4.ALTER


Question:
Which Clause is used to sort the stored data in alphabetical order?

1.ORDER by CLAUSE

2.MODIFY

3.ALTER

4.UPDATE


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

1.select now()

2.SELECT now();

3.SELECT now()

4.None of the mentioned


Question:
Which command is used for the table definition in Mysql?

1.DESC table_name;

2.DESC table_name

3.DESC

4.None of the mentioned


Question:
Which command is used to show all tables that are stored in a database?

1.SHOWS

2.SHOW

3.SHOWES

4.None of the mentioned


Question:
Which data type character merges the “Check Constraint” into a data type definition?

1.ENUM

2.ENUM1

3.ENUM2

4.None of the mentioned


Question:
Which declaration doesn't use the same number of bytes and consumption of bytes depends on the input data?

1.Varchar

2.Char

3.Both Varchar and Char

4.None of the mentioned


Question:
Which declaration represents that “character data will consume the same number of bytes as declared and is right padded”?

1.Char

2.Varchar

3.Both Char and Varchar

4.None of the mentioned


Question:
Which feature is used for the automatic increment of the column?

1.AUTO_INCREMENT

2.AUTO

3.INCREMENT

4.All of the mentioned


Question:
Which mode is used to turn off the special meaning of backslash and treat it as an ordinary character?

1.NO_ESCAPES_SLASH

2.NO_ESCAPES_BACKSLASH

3.NO_BACKSLASH_ESCAPES

4.NO_BACKSLASH_ESCAPE


Question:
Which of the following functions are not performed by “ALTER” clause?

1.Change the name of the table

2.Change the name of the column

3.Drop a column

4.All of the mentioned


Question:
Which statement can be used for modifying the definition for an existing table?

1.ALTER

2.Modified

3.SELECT

4.FROM


Question:
Which statement is used for updating existing information in the table?

1.UPDATE

2.WHERE

3.MODIFY

4.ALTER


Question:
Which statement is used to delete an existing row from the table?

1.DELETE

2.WHERE

3.MODIFY

4.None of the mentioned


Question:
Which Statement is used to insert the values in the table?

1.INSERT INTO

2.Insert

3.INSERT

4.None of the mentioned


Question:
Which statement is used to select columns and rows from the table?

1.SELECT

2.ALTER

3.MODIFY

4.FROM


Question:
X’61626364′ and X’61626364′ are respectively ______

1.abcd and 1633837924

2.abcd and 4297383361

3.dcba and 1633837924

4.dcba and 4297383361


Question:
x’ffff’ in decimal is ___

1.65534

2.66535

3.65536

4.65537


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