Exam 2: Modeling Data in the Organization

In the figure shown below,which of the following is true?

How is a strong entity different from a weak entity?

What is the difference between a simple attribute and a composite attribute?

When choosing an identifier,choose one that will not change its value often.

For the relationship represented in the figure below,which of the following is true?

A ________ is an association between two or more terms.

Data rather than processes are the most complex aspects of many modern information systems.

In an E-R diagram,there are ________ business rule(s)for every relationship.

In the following diagram,which is true?

The logical representation of an organization's data is called a(n):

The number of entity types that participate in a relationship is called the:

The following figure shows an example of:

A fact is an association between two or more terms.

In an E-R Diagram,an associative entity is represented by a rounded rectangle.

A person,place,object,event,or concept about which the organization wants or needs to store data is called a(n)________.

One reason to use an associative entity is if the associative entity has one or more attributes in addition to the identifier.

A meaningful relationship between entity types is called a(n)________.

Data names should always relate to business characteristics.

The following figure shows an example of:

The common types of entities are: