Week 3

Question 1

The object in a database which has attributes.

Answer 1

Entity

Question 2

These are the things that describe an entity

Answer 2

Attribute

Question 3

This type of attribute may have many components to make it up.

Answer 3

Composite

Question 4

An attribute that may have more than one value is said to be what?

Answer 4

multivalued

Question 5

A value that has a binary degree has how many entities participating in the relationship?

Answer 5

2

Question 6

The _____ is the upper and lower limits of a relationship

Answer 6

cardinality

Question 7

A weak entity type is one that what?

Answer 7

Depends on another entity, and has that other entities Primary Key as part of its PK. This is a total participation constraint (existence dependency)