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CS-403 2nd Quiz
Question # 1 of 5 ( Start time: 03:01:30 PM ) Total Marks: 1
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 columns.
is a unique identifier for a row within a database table. Not sure (pg 205)
The check constraint checks the values for any particular attribute. In this way
different types of constraints can be enforced in any table by CREATE command.
Question # 2 of 5
In “One to Many” cardinality one instance of a relation is mapped with
Select correct option:
many instances of second entity type
One instance of second entity type
Primary key of 2 relations
none of above
Question # 3 of 5 ( Start time: 03:03:55 PM ) Total Marks: 1
Which of the following constraints enforces entity integrity?
Select correct option:
PRIMARY KEY
FOREIGN KEY
CHECK
NOT NULL
Question # 4 of 5
in “one to one relationship” one instance of first entity can be mapped with two instances of second entity
true
false
Question # 5 of 5 ( Start time: 03:06:03 PM ) Total Marks: 1
in “many to many relationship” one instance of first entity can be mapped with many instances of second entity
Select correct option:
true
false
Muhammad Zulqurnain thanks
muja b yehi quiz aiya hai
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