10. MODIFICATION › 10.1 Parameter Modification › 10.1.2 Alter Derived Element Support

10.1.2 Alter Derived Element Support

Derived or computed elements (such as averages and percents)
can either be kept in the database or computed when the
elements are required.  Computing these elements only when
they are required can reduce the amount of DASD needed for
the database.  The statements in SRLGENIN that affect this
option are COMPOPT and FOPT.  These override the defaults set
in CPLXDEF.  After modifying these options in SRLGENIN, you
must run SRLCGEN.  Follow the steps in Checklist 1 in Section
10.1.7 to complete this task.

See Sections 4.2.4.1.3 and 4.2.4.2.2 of the System
Modification Guide for information on COMPOPT and FOPT, and
Section 2.3.1.8 of the PIOM for more information on CPLXDEF.