January 2004
Intermediate to advanced
483 pages
13h 35m
English
Content preview from How to Build a Business Rules Engine
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in a business of some kind. The physical name of the screen is frmINV_INVEST
MENT_S, and it updates data in the database table INV_INVESTMENT_S.
There are actually several types of rule that can be involved in edit checks for any
screen. These are listed in Table 15.1. What is interesting about these rule types is
that they must be executed in the sequence shown in Table 15.1. This sequence will
make sense to any IT professional and is not something that a rules engine could ever
infer. Rather than have the rules engine deal with the sequence, a sequence number
is stored in the Repository in the Business Rule Type table.
Thus, for edit validation rules, there is a general prescribed sequence for rule
types. The sequence in which these rule types must ...
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