| ER Models | ERM References | ERM Anthologies |
| Model No. | 55 | |||
| Short Citation | (Rochfeld et al. 1991) | |||
| Year | 1990 | |||
| Special Name | ||||
| Descendant of | (Chen 1976) | |||
| Constructs | Inherent | Entity Type | X | |
| Relationship Type | sg/l: min/max | |||
| Value Sets / Attributes | sg: key | |||
| New | Invented | Adapted | (inclusive/exclusive) functional integrity constraint | |
| Included | ||||
| Borrowed | Included | |||
| Added | ||||
| Syntactic Rules | Relationships connect relationship types. | |||
| Semantics | primarily informal | |||
| Focus | g | |||
| Data Definition | ||||
| Data Manipulation | ||||
| Remarks | ||||
| Cause | Citation | [remove] ... a modelling constraint (p. 149). | ||
| Content | Expressiveness | |||
| Applicability | X | |||
| Correction | ||||
| Integration | ||||
| Implementation | ||||
| Other | ||||
| Alternative Publications | ||||
| Binary Vector | Structure/General | [E1] | 1 | |
| [E2] | m | |||
| [E3] | ||||
| [E4] | ||||
| [E5] | ||||
| [E6] | ||||
| Structure/Integrity | [E7] | 1 | ||
| [E8] | ||||
| [E9] | ||||
| [E10] | 1 | |||
| [E11] | 1 | |||
| [E12] | 1 | |||
| [E13] | 1 | |||
| [E14] | ||||
| [E15] | ||||
| [E16] | 1 | |||
| 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 | |||
| Linked Concepts | ||||