| Name | Meta_Link_Attribute |
|---|---|
| Entity Type | External |
| Description | Relationships keys are defined in Meta_Link_Attribute table. |
| Submodel | Meta |
| Entity Scope | Meta |
| Primary Key | Entity , Link , Source_Attribute , Target_Attribute |
| Natural Key | Entity , Link , Source_Attribute , Target_Attribute |
| Generalizations | |
| Specializations |
| Name | Value Domain | Property / Storage Unit | Description | Required / Default | Type |
|---|---|---|---|---|---|
| Entity | Meta_Entity |
|
Foreign Key to Meta_Entity | Yes |
VARCHAR2(25) |
| Link |
|
Name of relationship property. Actual implementation for Link to Entity XYZ is XYZ_Id. Abstract relationships require XYZ_Type. | Yes |
VARCHAR2(30) | |
| Source_Attribute |
|
Name of the source attribute in the relationship. | Yes |
VARCHAR2(30) | |
| Target_Attribute |
|
Name of the target attribute in the relationship. | Yes |
VARCHAR2(30) |
| Link | To Entity | Description | Implementation Technique | Required |
|---|---|---|---|---|
| Entity | Meta_Entity | Foreign Key to Meta_Entity | Restrict | Yes |