3. Only a single attribute, not multiple attributes, can define functional dependence.

	a.	True
	b.	False

4. Each row in the relational table is known as an entity instance or entity occurrence in the ER model.

	a.	True
	b.	False

5. A data dictionary is sometimes described as the database designers database because it records the design decisions about tables and their structures.

	a.	True
	b.	False

6. Character data can contain any character or symbol intended for mathematical manipulation.

a.

True

b.

False

7. A dependency of one nonprime attribute on another nonprime attribute is a partial dependency.

	a.	True
	b.	False

8. Since a partial dependency can exist only if a table's primary key is composed of several attributes, if a table in 1NF has a single-attribute primary key, then the table is automatically in 2NF.

	a.	True
	b.	False

9. The COMMIT command does not permanently save all changes. In order to do that, you must use SAVE.

	a.	True
	b.	False

10. You can select partial table contents by naming the desired fields and by placing restrictions on the rows to be included in the output.

	a.	True
	b.	False

Indicate the answer choice that best completes the statement or answers the question. 2 points each

11. A _____ entity has a primary key that is partially or totally derived from the parent entity in the relationship.

	a.	strong	b.	weak
	c.	business	d.	child

12. A _____ contains at least all of the attribute names and characteristics for each table in the system.

	a.	data dictionary	b.	relational schema
	c.	logical schema	d.	database

13. If an employee within an EMPLOYEE entity has a relationship with itself, that relationship is known as a _____ relationship.

	a.	self	b.	self-referring
	c.	looping	d.	recursive

14. The existence of a(n) _____ entity indicates that its minimum cardinality is zero.

	a.	ternary	b.	optional
	c.	strong	d.	weak

15. Each table _____ represents an attribute.

	a.	column	b.	row
	c.	dimension	d.	value