HALDB partition data sets

HALDB databases, regardless of type, can contain 1 to 1 001 partitions; however, the number of data sets per partition depends on the type of HALDB database and whether or not the integrated HALDB Online Reorganization function is used.

HALDB partitions contain the following types of data sets:

Database data sets: The database data sets contain the segment data for PHDAM and PHIDAM databases. Database data sets can be OSAM or VSAM entry sequenced data sets (ESDS).
Index data sets: Index data sets can be a primary index in a PHIDAM database or a secondary index data set in a PSINDEX partition. Index data sets are VSAM key sequenced data sets (KSDS).
Indirect list data set (ILDS): ILDSs contain indirect list entries (ILE) that are used to manage pointers when logical relationships and PSINDEXes are used. ILDSs are VSAM KSDSs.