ER Models | ERM References | ERM Anthologies |
Model No. | 61 | |||
Short Citation | (Loucopoulos et al. 1991) | |||
Year | 1991 | |||
Special Name | ERT (ER-Time) | |||
Descendant of | ||||
Constructs | Inherent | Entity Type | r: class, sg: time period class, complex object, derived | |
Relationship Type | sg: generalization/specialization, derived, sg/l: cardinality | |||
Value Sets / Attributes | sg/l: complex, role | |||
New | Invented | Adapted | ||
Included | ||||
Borrowed | Included | |||
Added | ||||
Syntactic Rules | X | |||
Semantics | formalized | |||
Focus | g/t | |||
Data Definition | l | |||
Data Manipulation | l | |||
Remarks | ||||
Cause | Citation | ... capturing and representation of business rules (p. 323). ... the need for expressiveness power of conceptual modelling formalisms... (p. 324). | ||
Content | Expressiveness | integrity | ||
Applicability | ||||
Correction | ||||
Integration | ||||
Implementation | ||||
Other | ||||
Alternative Publications | (Theodoulidis et al. 1991), (Theodoulidis et al. 1992) | |||
Binary Vector | Structure/General | [E1] | 1 | |
[E2] | 1 | |||
[E3] | i | |||
[E4] | 1 | |||
[E5] | ||||
[E6] | ||||
Structure/Integrity | [E7] | |||
[E8] | ||||
[E9] | i | |||
[E10] | 1 | |||
[E11] | 1 | |||
[E12] | 1 | |||
[E13] | i | |||
[E14] | i | |||
[E15] | f | |||
[E16] | f | |||
Behavior | [E17] | |||
[E18] | ||||
Application | [E19] | |||
[E20] | ||||
[E21] | ||||
[E22] | ||||
[E23] | ||||
[E24] | ||||
[E25] | ||||
[E26] | ||||
[E27] | ||||
Domain-Specifics | [E28] | |||
[E29] | ||||
[E30] | ||||
[E31] | ||||
[E32] | ||||
[E33] | ||||
Expressiveness Values | Total | 0.36 | ||
Data Model | 0.67 | |||
Application | 0.00 | |||
Domain Specifics | 0.00 | |||
Partially Redundant Constructs | Conjunctive Concepts | S, J, T | ||
Linked Concepts | D |