Exam 4: Data Modeling and the Entity-Relationship Model

A dashed line between entities indicates:

Explain the ambiguity in the broad definition of a weak entity.

An ID-dependent entity is:

Microsoft Access can be used to build a prototype database,which allows users:

The ________ is a representation of the content,relationships,and constraints of the data needed to support the system requirements.

________ constrain data values and the processing of the database.

Microsoft Access 2013 ________ allow easy mock-ups of forms and reports for prototyping.

Explain maximum cardinality.

In crow's foot E-R notation,the crow's foot indicates a maximum cardinality of one.

Microsoft Access 2013 is only used to prototype databases where Microsoft Access itself will be the final DBMS.

Whether or not an instance of one entity class must participate in a relationship with another entity class is indicated by the:

It is possible for an entity to have a relationship to itself.

A use case is a description of the way a user will employ the features and functions of the new system.

Given only the following excerpt of an E-R model: Which of the following is known to be true?

During the implementation phase of developing a database system,the data model is transformed into a database design.

The Microsoft Access 2013 form editor is a(n):

Subtype entities may be either exclusive or inclusive.

How is minimum cardinality expressed in crow's foot E-R diagrams?

Given only the following excerpt of an E-R model: Which of the following is known to be true?

________ can be used to build prototype databases.