Exam 8: Data Modeling and Analysis

Once the data model has been defined, it is trivial to identify the remaining data attributes.

A candidate key is the candidate to become the ___________________________ of instances of an entity.

In a good data mode, each data attribute describes at most one entity.

______________________ codes use finite combinations of letters or numbers to describe entity instances.

An attribute or group of attributes that assumes a unique value for each entity instance is a:

Conceptually cardinality defines the minimum and maximum attributes that can be added to an entity.

A generalization hierarchy can be at most two levels deep.

A recursive relationship is when only one entity participates in the relationship.

A foreign key in a child entity always matches the primary key in the parent entity.

________________________ attributes are those whose values can either be calculated from other attributes or derived through logic from the values of other attributes.

When a parent entity contributes its primary key to become part of the primary key of the child entity, the relationship is known as:

Which of the following is a category of entities?

__________________ codes assign sequentially generated numbers to entity instances.