Unqualified calls

When an unqualified call is issued for a segment, the way in which the search proceeds depends several different factors.

The factors include:

• Whether the database is HDAM, PHDAM, HIDAM, or PHIDAM
• Whether a root or dependent segment is being accessed
• Where position in the database is currently established
• What type of pointers are being used
• Where parentage is set (if the call is a GNP)

Because of the many variables, it is not practical to generalize on how a segment is accessed.