How Do I Define Business Rules?
So far, this chapter has covered the basics of ADF Business Components. It has tackled the core issues of both read-only and updateable queries, but it has not discussed the definition of any rules or logic associated with that basic activity. For most applications, we can consider three levels of business logic:
Database referential integrity constraints These are referential integrity rules defined through relationships in the database that enforce structural aspects of the relational data itself, for example, “Each employee must be assigned to a department that actually exists.”
Basic data content validations ...
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