AIS - Chapter 8

The process of defining a database so that it faithfully represents all aspects of the organization, including its interactions with the external environment.

The graphical technique for portraying a database schema.

Anything about which the organization wants to collect and store information.

Developed specifically for use in designing AIS. It focuses on the business semantics underlying an organization's value-chain activities.

Those things that have economic value to the organization.

The various business activities about which management wants to collect information for planning or control purposes.

The people and organizations that participate in events and about whom information is desired for planning, control, and evaluation purposes.

Describe the nature of the relationship between two entities by indicating how many instances of one entity can be linked to each specific instance of another entity.

Can either be zero or one, depending upon the whether the relationship between the two entities is optional (the minimum cardinalities is zero) or mandatory (the minimum cardinality is one)

Can either be one or many depending upon whether each instances of entity A can be linked to at most one instance or potentially many instances of entity B.

Exists when the maximum cardinality for each entity in that relationship is 1.

Exists when the maximum cardinality of one entity in the relationship is 1 and the maximum cardinality for the other entity in that relationship is many.

Exists when the maximum cardinality for both entities in the relationship is many.

Accounts Receivable would appear in an REA diagram as an example of which kind of entity?

a. resource
b. event
c. agent
d. none of the above

Which of the following is NOT likely to be depicted as an entity in the REA data model?

a. customers
b. sales
c. invoices
d. delivery truck