Using SSAs in a load program

When you are loading segments into the database, you do not need to worry about position, because DL/I inserts one segment after another. The most important part of loading a database is the order in which you build and insert the segments.

The only SSA you must supply is the unqualified SSA giving the name of the segment type you are inserting.

Because you do not need to worry about position, you need not use SSAs for the parents of the segment you are inserting. If you do use them, be sure they contain only the equal (EQ, =b, or b=) relational operator. You must also use the key field of the segment as the comparative value.

For HISAM, HIDAM, and PHIDAM, the key X'FFFF' is reserved for IMS. IMS returns a status code of LB if you try to insert a segment with this key.