CS403 Quiz No.2

On Wed, Nov 28, 2012 at 7:13 PM, Umair Saulat <saulat.umair@gmail.com> wrote:

CS403  Quiz No.2 Dated 28-11-2012

 

 

 

Binary relationships are those, which are established between
Select correct option:
One entity type
Two entity type Correct Answer
Three entity type
Unlimited entities

 

in "many to many relationship" one instance of first entity can be mapped with many instances of second entity 
Select correct option: 

true 
false Correct Answer

 

Which of the following is a feature of CHECK constraint? Select correct option:

limit the values that can be placed in a column.

used to enforce referential integrity.

enforces the uniqueness of the values in a set of column Correct Answer

is a unique identifier for a row within a database table.

 

Binary relationships are those, which are established between
Select correct option:
One entity type
Two entity type Correct Answer
Three entity type
Unlimited entities

 

Which of the following constraints enforces entity integrity?
Select correct option:
PRIMARY KEY Correct Answer
FOREIGN KEY
CHECK

 

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