Glossary
activity diagram (UML)—a process workflow model (diagram) showing the flow from one activity to the next.
aggregation—a special type of abstraction relationship that defines a higher-level entity that is an aggregate of several lower-level entities; a “part-of” relationship. For example, a Bicycle entity is an aggregate of Wheel, Handlebar, and Seat entities.
association—a relationship between classes (in UML). Associations can be binary, n-ary, reflexive, or qualified.
attribute—a primitive data element that provides descriptive detail about an entity; a data field or data item in a record. For example, lastname would be an attribute for the entity Customer. Attributes may also be used as descriptive elements for certain relationships ...
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