Quiz About

Normalization

Question 1

Second Normal form is designed

to A. Ensure that a table is in

first normal form is decomposed into two fields

C. Ensure that every non key field in a record has a corresponding foreign key in atleast one other table

B. Ensure that a table that is in first normal form is decomposed into two or more tables

D. Ensure that every non key field in a record is fully functionally dependant upon the key field

Question 2

A Foreign key is

A.A field in a table that contains data that is also contained elsewhere in another table

C. A key that consists of more than one field

B. A field in a table that has the same name as a key field in another table

D. A field in a table that matches a key field in another table

A. 1990’s

C. 1980’s

B. 1970’s

D.1960’s

Question 3

The model for a relational

database was proposed in the

Question 4

A foreign key must

A. Have either a

matching value in

the

reffering(Primary)

table or be Null

C. Not be Null

B. Have a matching

value in the

referring(Primary)

table

D. Not contain the same

value more than

once

Question 5

Normalization is

A. The process of ensuring that each table has a key

C. A process whereby a limit is put on the number of fields a record can contain

B. A process whereby the design of a table(relation) is decomposed into more tables that more precisely fit the relational model

D. The process of ensuring that a relational database has at least two tables in it

Question 6

Third Normal form is designed to

A. Ensure there are no dependencies between keys & foreign keys

C. Ensure that the database contains three tables

B. Ensure that a table that is in second normal form is decomposed into two or more tables

D. Ensure that there are no transitive dependencies between non-key fields

Question 7

A transitive dependency

A. Is where field does not always depend upon the key field

C. Is where field A depends upon field B and field B is not a key field

B. Is where field A depends upon field B and field B is a key field

D. Is allowed in third normal form

Bonus Question

A one to many relationship(of table A to

table B) is

A. Where each record in table B can have one or more matching records in table A

C. Where each record in table A can have one or more matching records in table B

B. Where each record in table A is required to have a match in table B

D. Where each record in table B is required to have a match in table A

Key

• 1) D

• 2) D

• 3) B

• 4) A

• 5) B

• 6) D

• 7) C