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  2. RPG400-L
  3. October 2007

Re: MVC in RPG?

On 10/2/07, Lim Hock-Chai <Lim.Hock-Chai@xxxxxxxxxxxxxxx> wrote:

I don't see how one can easily implement business logic at the DB layer.
When a program writes/update a record in a file, the values in this
record will likely to require all type of records from other files to
get validated correctly. It is a lot better to implement business logic
at a business logic layer, as Aaron mentioned in previous email.


So you are willing to have a business rules layer but you insist on having
the DB access in the Main? That's a fairly incongruous set of
requirements. The rules need to be either in between the Main program and
the DB access (Controlling the DB Access) or they need to be in the same
layer as the DB access (co-existence).


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