BCS Record Types

The first cell in each record has a cell type field, which is also the record type (or ID). The record type is identified by the DIAGNOSE command if DIAGNOSE lists the entry. The following are the possible record types and their one character identifiers:

ID	Record Type
A	non-VSAM data set
B	generation data group
C	cluster
D	data component of a cluster
E	VSAM extension record
G	alternate index
H	generation data set
I	index component of a cluster
J	generation data group extension cell
L	library
R	path
T	true name
U	user catalog connector
V	user catalog connector extension record
W	volume
X	alias