There is always seems to be a confusion in understanding the concepts of Qualified and Unqualified SSA's and Qualified and Unqualified calls. Can some one take time to explain the concepts with examples.
Joined: 28 Mar 2005 Posts: 1509 Location: Chicago, IL
Hi Vinadha,
Unqualified SSA: It specifies the SEGMENT TYPE the program is interested in. Here you don't indicate a particular occurrence of a segment because you don't care which occurrence of a segment you get.
It'll always extract first occurrence of the segment.
Qualified SSA: This is addition to the SEGMENT TYPE, also contains one or more qualification statements. A qualified SSA describes the segment occurrence a program wants to access.
It'll extract the occurrence matching with qualification provided.
There is always seems to be a confusion in understanding the concepts of Qualified and Unqualified SSA's and Qualified and Unqualified calls. Can some one take time to explain the concepts with examples.
Thanks,
Vinadha
hai vinadha..
hope these clarifications help you:
qualified call:
A call that uses one or more SSA(Segment Search Arguement). A SSA is a particular way to access the DB by specifying the segment in which we need to look for.
Unqualified Call:
An unqualified call does not have any specification of SSA.
Qualified SSA:
A qualified SSA is a mean to look into the DB by specifying the segment and also the particular occurence with in the segment.
Unqualified SSA:
An Unqualified SSA does not mention the particular occurecne of the segment. Instead it mentions only the segment within which need is to look.
