SAP ABAP Data Element CARD (Cardinality of a relationship)
SAP_BASIS (Software Component) SAP Basis Component
   BC-DWB-DIC-AC (Application Component) Activation Program, Conversion Program, DB Utility, MC, SPDD
     SDIC (Package) ABAP Dictionary
Basic Data
Data Element CARD
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 CARD    
Data Type CHAR   Character String 
Length 2    
Decimal Places 0    
Output Length 2    
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  
Medium 18 Cardinality 
Long 20 Cardinality 
Heading Cd 


The cardinality (n : m) describes the foreign key relationship with regard to the number of possible dependent records involved (records of the foreign key table) or referred records (records of the check table).

The right side of the cardinality has the following significance:

  • m = 1

    For each record of the check table there is exactly one dependent record.

  • m = C

    For each record of the check table there is at most one dependent record.

  • m = N

    For each record of the check table there is at least one dependent record.

  • m = CN

    For each record of the check table there are any number of dependent records.

Last changed by/on SAP  19970321 
SAP Release Created in