Relational MR Database CDSC: Supported CDSC features

Developer Documentation Library > Data Model > Available DSCs > Relational MR database (RDB) CDSC > Relational MR Database CDSC: Supported CDSC features

Every CDSC component has a property map to let client components (such as the ) know what it supports. The following table shows the Relational MR Database CDSC property map values. For more information about the CDSC property map, see CDSC interface.

Property	Value
Aggregates	False
Can Add	True
Can Delete	True
Can Select	True
Can Update	True
DDL Column	True
DDL Hierarchical Column	False1
DDL Hierarchical Table	False1
DDL Table	True
Expressions	False
HDATA	True
Max Commands	0
Max Text Size	4000
Scroll Backward	False1
SDATA	False
Stream Binary	False
Use Binding Properties	False
Use Command Properties	False
Use Group By	False
Use Having	False
Use Order By	False
Use Where	True
VDATA	True

1 These values were True for the original ODBC-based RDB DSC.

When both DDL Column and Can Delete are set to True, the drop column clause in the ALTER table statement will only work for variables that are in the top level (LevelDepth = 1 and the variable's ObjectTypeValue is mtVariable). For more information, see ALTER TABLE.