Exam 2: Data Models

M:N relationships are not appropriate in a relational model.

The term ____________________ is used to refer to the task of creating a conceptual data model that could be implemented in any DBMS.

The network model has structural level dependence.

A(n)____ represents a particular type of object in the real world.

Data modeling starts with a very complex representation,and as knowledge of the problem is gained,the model is simplified.

A verb associating two nouns in a business rule translates to a(n)____ in the data model.

___________________________________ is a language based on OO concepts that describes a set of diagrams and symbols used to graphically model a system.

A(n)____ model represents a global view of the database as viewed by the entire organization.

The ____ model is the end users' view of the data environment.

What do business rules require to be effective?