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Sounds really compelling... but how would you advise somebody to implement an Oracle-dependent system at a customer that does not use Oracle?
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I am not talking about an Oracle dependent system. As far as the front end is concerned, it is just communicating with a database. What goes on inside the database is entirely a black-box operation - totally encapsulated from the front-end. If the customer uses sql server, then you implement the sql server db. If the customer uses oracle, then you implement the oracle db, etc, etc.