January 2004
Intermediate to advanced
483 pages
13h 35m
English
Content preview from How to Build a Business Rules Engine
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Some data modelers may object to this design, saying that datatype is really some-
thing that is specific to a database server such as Access or Oracle. This would argue
for making Datatype a child of a Database Server entity. It would solve the problem
of identically named datatypes being different things in different databases (like
“Text” in Access and SQL Server). However, it would also make the repository design
presented here more complex, and it would be unnecessary unless there is a need to
deal with multiple different database servers. It is therefore not used in the design
presented here. Nevertheless, designers may find that they have to introduce ...
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