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Using command codes

BMC AMI Fast Path Indexer for IMS

 supports most IMS command codes.

Warning

Note

BMC AMI Fast Path Indexer for IMS does not support the IMS command code C related to concatenated keys.

The IMS command code D is the only IMS command code that is associated with indexes. Command code D instructs the application program to obtain all segments in a particular path and place them in the I/O area. For example, if you have a database that includes information about a university and you want to obtain the Instructor, Location, and Course segments in a certain path, use the following call:

GU  INSTR  *D--(SRCVALU   EQ000007000)
    LOCN   *D--(LOCNCD    EQDDDD)
    COURSE *D--(COURSE#   EQ00005)

To obtain only the Instructor and Course segments, use the following call:

GU  INSTR  *D--(SRCVALU  EQ000007000)
    LOCN   *---(LOCNCD   EQDDDD)
    COURSE *D--(COURSE#  EQ00005)

If you do not specify the last segment in a path (in this example, Course), IMS always assumes that you want to obtain it.

Warning

Note

BMC AMI Fast Path Indexer for IMS does not support path calls that insert, replace, or delete through a PROCSEQ PCB.

Related topic

Programming-considerations-for-applications


 

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BMC AMI Fast Path Indexer for IMS 4.1