ER Models | ERM References | ERM Anthologies |
Model No. | 87 | |||
Short Citation | (Moody 1997) | |||
Year | 1997 | |||
Special Name | ||||
Descendant of | Information Engineering | |||
Constructs | Inherent | Entity Type | X | |
Relationship Type | sg: cardinality, optionality | |||
Value Sets / Attributes | X | |||
New | Invented | Adapted | subject areas | |
Included | ||||
Borrowed | Included | |||
Added | ||||
Syntactic Rules | Each entity type is assigned to one subject area. | |||
Semantics | informal | |||
Focus | ||||
Data Definition | ||||
Data Manipulation | ||||
Remarks | ||||
Cause | Citation | On of the ... limitations of the Entity Relationship Model is its inability to cope with the size and complexity of data models encountered in real world situations (p. 184). | ||
Content | Expressiveness | |||
Applicability | X | |||
Correction | ||||
Integration | ||||
Implementation | ||||
Other | ||||
Alternative Publications | ||||
Binary Vector | Structure/General | [E1] | ||
[E2] | m | |||
[E3] | i | |||
[E4] | ||||
[E5] | ||||
[E6] | ||||
Structure/Integrity | [E7] | m | ||
[E8] | ||||
[E9] | ||||
[E10] | 1 | |||
[E11] | 0 | |||
[E12] | 1 | |||
[E13] | m | |||
[E14] | i | |||
[E15] | 1 | |||
[E16] | ||||
Behavior | [E17] | |||
[E18] | ||||
Application | [E19] | |||
[E20] | ||||
[E21] | ||||
[E22] | ||||
[E23] | ||||
[E24] | ||||
[E25] | ||||
[E26] | ||||
[E27] | ||||
Domain-Specifics | [E28] | |||
[E29] | ||||
[E30] | ||||
[E31] | ||||
[E32] | ||||
[E33] | ||||
Expressiveness Values | Total | 0.24 | ||
Data Model | 0.44 | |||
Application | 0.00 | |||
Domain Specifics | 0.00 | |||
Partially Redundant Constructs | Conjunctive Concepts | S | ||
Linked Concepts |