October 2011
Intermediate to advanced
510 pages
18h 48m
English
book
IBM IMS Version 12 Technical Overview
by Paolo Bruni, Isabelle Bruneel, Angie Greenhaw, Dougie Lawson, Jorge Alberto Luz Ribeiro, Egide Van Aershot
Content preview from IBM IMS Version 12 Technical Overview
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Chapter 3. Database enhancements 93
Example 3-18 DBDGEN statements for multi secondary index segments
LCHILD NAME=(sisegname,sidbname),PTR=SYMB,MULTISEG=YES
XDFLD ..................NULLVAL=value1
Multiple secondary index segments are defined by including multiple LCHILD and XDFLD
statement pairs in the indexed database (Figure 3-18).
The LCHILD segment must include the MULTISEG=YES parameter. MULTISEG=NO is the default
for this parameter.
The NULLVAL= parameter is useful for avoiding the creation of secondary indices without a
value. With this parameter, you suppress the creation of index pointer segments when the
index source segment data used ...
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