Hierarchy
SAP_BASIS (Software Component) SAP Basis Component⤷
BC-DWB-TOO-DMO (Application Component) Data Modeler⤷
SDUM (Package) DM: Data Modeler (new) and SIMO (old)
Basic Data
| Data Element | UDCDLEFT |
| Short Description | Cardinality of a relationship |
Data Type
| Category of Dictionary Type | D | Domain |
| Type of Object Referenced | No Information | |
| Domain / Name of Reference Type | UDCDLEFT | |
| Data Type | CHAR | Character String |
| Length | 2 | |
| Decimal Places | 0 | |
| Output Length | 1 | |
| Value Table |
Further Characteristics
| Search Help: Name | ||
| Search Help: Parameters | ||
| Parameter ID | ||
| Default Component name | ||
| Change document | ||
| No Input History | ||
| Basic direction is set to LTR | ||
| No BIDI Filtering |
Field Label
| Length | Field Label | |
| Short | 10 | Cardin. |
| Medium | 17 | Left cardinality |
| Long | 20 | Cardinality |
| Heading | 2 | C |
Documentation
Definition
The cardinality (n : m) describes the relationship with respect to the possible number of participating entities (entities of the target entity type of the relationship) or referenced entities (entities of the source entity type of the relationship).
The left- and right-hand sides of the cardinality have the following significance:
n = 1
For each dependent entity there is exactly one referenced entity.
n = C
Dependent entities may exist that do not refer to any entity of the source entity type.
Referential relationships with the additional characteristic that, irrespective of when an entity was created, a relationship to this entity can be created or deleted are referred to as temporarily referential.
m = 1
For each entity of the source entity type, there is exactly one dependent entity.
m = C
For each entity of the source entity type, there is a maximum of one dependent entity.
m = N
For each entity of the source entity type, there is at least one dependent entity.
m = CN
For each entity of the source entity type, there can be any number of dependent entities.
History
| Last changed by/on | SAP | 19950421 |
| SAP Release Created in |
