Question 1

The sql command "alter table" is a

Options :

A : DCL statement

B : DML statement

C : DDL statement

D : All the options are correct

Answer: C

Question 2

The command "ls -l|tail +5" displays

Options :

A : The last five lines of the listing

B : From the fifth line to the end of the listing.

C : The first five lines of the listing.

D : None of the options are correct

Answer: B

Question 3

In vi editor, the command ":q!" is used for

Options :

A : Quit and abandon changes

B : Save and quit

C : Replace old copy with new and quit.

D : All the options are correct

Answer: A

Question 4

The sql statement "DESC emptable"

Options :

A : Is used to view the structure of the table emptable

B : Shows the user all the data in the table

C : Selects the number of rows in the table

D : None of the options are correct

Answer: A

Question 5

"Select sol_desc from SOL where city_code like '?D' " gives

Options :

A : A list of city code where the city code ends with BAD

B : A list of sol_desc where the city code ends with BAD

C : A list of sol_desc where the city code ends with BAD and only one letter before BAD

D : A list of city code where city code starts with BAD

Answer: B