42 The Complete IMS HALDB Guide All You Need to Know to Manage HALDBs
Symbolic keywords
IMS supplies symbolic keywords and symbolic keyword values for use with
HALDB. The %mdbname symbolic keyword is used for the master database
name. The %dbname symbolic keyword is used for the partition name. The
%dbtype symbolic keyword has the following values for HALDB database data
sets:
PDATA Data set types A through J (data DBDS and PSINDEX)
PILDS Data set type L (ILDS)
PINDEX Data set type X (PHIDAM primary index)
3.6 DBRC groups for HALDB
HALDB databases, partitions, and data sets may be members of DBRC groups.
3.6.1 Change accumulation groups
When defining a change accumulation group, you must specify the partition
name and DDNAME for HALDB database data sets. ILDSs and PHIDAM primary
indexes cannot be included in a change accumulation group.
3.6.2 Database data set groups
When defining a DBDS group, you must specify the partition name and
DDNAME for HALDB database data sets. ILDSs and PHIDAM primary indexes
may be included in a DBDS group.
3.6.3 Database groups
When defining a database group, you may specify master database names,
partition names, or both.
3.6.4 Recovery groups
When defining a recovery group, you must specify a master database name. You
cannot specify a partition name. When a database belongs to a recovery group,
all of its partitions belong to the group.

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