Chapter 2, Problem 2.2RQ

Match the following terms and definitions.

_____composite attribute
_____associative entity
_____unary relationship
_____weak entity
_____attribute
_____entity
_____relationship type
_____cardinality constraint
_____degree
_____identifier
_____entity type
_____ternary
_____optional attribute

1. uniquely identifies entity instances
2. relates instances of a single entity type
3. specifies maximum and minimum number of instances
4. relationship modeled as an entity type
5. association between entity types
6. collection of similar entities
7. number of participating entity types in relationship
8. property of an entity
9. can be broken into component parts
10. depends on the existence of another entity type
11. relationship of degree 3
12. may not have a value
13. person, place, object, concept, or event