Category
page 1Data modeling diagrams
Unified Modeling Language
software system design modeling tool
entity
An entity is something that exists as itself. It does not need to be of material existence. In particular, abstractions and legal fictions are usually regarded as entities. In general, there is also no presumption that an entity is animate, or present. The verb tense of this form is to 'entitize' - meaning to convert into an entity; to perceive as tangible or alive.
entity-relationship model
describes inter-related things of interest in a specific domain of knowledge;composed of entity types (which classify the things of interest) and specifies relationships that can exist between instances of those entity types
IDEF1X
thumb|320px|Example of an IDEF1X diagram.
data structure diagram
visual representation of a certain kind of data model that contains entities, their relationships, and the constraints that are placed on them