Specifying the Type of Deletion

Use the DELETETYPE keyword to indicate the type of delete processing to be performed. The default (DIRANDDATA) requests that all cache structure resources for the entry be released for reuse by the structure and also all applicable connections have their interest deregistered and a cross-invalidate performed against their local vector.

The other DELETETYPE keyword options all provide the ability to keep the data item's directory entry and not have the system perform the cross-invalidate against connectors' local vectors. For each structure entry,

UNCHDATA requests that all unchanged data only be released for reuse.
CHDATA requests that all changed data be released for reuse and certain status associated with the data's change state be reset.
ANYDATA requests that, whether changed or unchanged, the data is to be released for reuse and status fields associated with the data's change state are to be reset.