Database - Data Models into Database Designs MCQs Part

1. Which of the following data constraints would be used to specify that the value of cells in a column must be one of a specific set of possible values?

A.
A domain constraint
B.
A range constraint
C.
An intrarelation constraint
D.
An interrelation constraint

 Answer Option A

2. In a 1:N relationship, the foreign key is placed in:

A.
either table without specifying parent and child tables.
B.
the parent table.
C.
the child table.
D.
either the parent table or the child table.

 Answer Option C

3. Which of the following column properties specifies whether or not cells in a column must contain a data value?

A.
Null status
B.
Data type
C.
Default value
D.
Data constraints

 Answer Option A

4. A primary key should be defined as:

A.
NULL.
B.
NOT NULL.
C.
Either of the above can be used.
D.
None of the above are correct.

 Answer Option B

5. Which of the following column properties would be used to specify that cells in a column must contain a monetary value?

A.
Null status
B.
Data type
C.
Default value
D.
Data constraints

 Answer Option B

6. Which of the following situation requires the use of ID-dependent entities?

A. Association relationships only
B. Multivalued attributes only
C. Archetype/instance relationships only
D. All of the above use ID dependent entities

 Answer Option D

7. A foreign key is:

A. a column containing the primary key of another table.
B. used to define data types.
C. used to define null status.
D. all of the above are above correct.

 Answer Option A

8. Which of the following columns is(are) are required in a table?

A. A foreign key
B. An alternate key
C. A primary key
D. A surrogate key.

 Answer Option C

9. In a 1:1 relationship, the foreign key is placed in:

A. either table without specifying parent and child tables.
B. the parent table.
C. the child table.
D. either the parent table or the child table.

 Answer Option A

10. Which of the following column properties would be used to specify that cells in a column must be immediately filled with a monetary value of $10,000?

A. Null status
B. Data type
C. Default value
D. Data constraints

 Answer Option C

11. The identifier of an entity will become the ________ of the new table.

A. foreign key
B. main attribute
C. primary key
D. identity key

 Answer Option C

12. Which of the following data constraints would be used to specify that the value of a cell in one column must be less than the value of a cell in another column in the same row of the same table?

A. A domain constraint
B. A range constraint
C. An intrarelation constraint
D. An interrelation constraint

 Answer Option C

13. A unique, DBMS-supplied identifier used as the primary key of a relation is called a(n):

A. primary key.
B. foreign key.
C. composite key.
D. surrogate key.

 Answer Option D

14. Which is not true about surrogate keys?

A. They are short.
B. They are fixed.
C. They have meaning to the user.
D. They are numeric.

 Answer Option C

15. For every relationship, how many possible types of actions are there when enforcing minimum cardinalities?

A. Two
B. Three
C. Four
D. Six

 Answer Option D

16. Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relationship?

A. MUST COVER
B. MUST NOT
C. Both of the above.
D. None of the above is correct.

 Answer Option A

17. Each entity is represented as a(n):

A. tuple.
B. table.
C. attribute.
D. file.

 Answer Option B

18. For every relationship, how many possible sets of minimum cardinalities are there?

A. Two
B. Three
C. Four
D. Six

 Answer Option C

19. If a relationship has a cascade updates constraint, then if ________ in the parent table is changed, then the same change will automatically be made to any corresponding foreign key value.

A. the primary key
B. any alternate key
C. a surrogate key
D. a foreign key

 Answer Option A

20. Which of the following column properties would be used to specify that cells in a column must contain a monetary value that is less than another monetary value in the same row?

A. Null status
B. Data type
C. Default value
D. Data constraints

 Answer Option D

6. Which of the following situation requires the use of ID-dependent entities?

A. Association relationships only
B. Multivalued attributes only
C. Archetype/instance relationships only
D. All of the above use ID dependent entities

 Answer Option D

7. A foreign key is:

A. a column containing the primary key of another table.
B. used to define data types.
C. used to define null status.
D. all of the above are above correct.

 Answer Option A

8. Which of the following columns is(are) are required in a table?

A. A foreign key
B. An alternate key
C. A primary key
D. A surrogate key.

 Answer Option C

9. In a 1:1 relationship, the foreign key is placed in:

A. either table without specifying parent and child tables.
B. the parent table.
C. the child table.
D. either the parent table or the child table.

 Answer Option A

10. Which of the following column properties would be used to specify that cells in a column must be immediately filled with a monetary value of $10,000?

A. Null status
B. Data type
C. Default value
D. Data constraints

 Answer Option C

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