Greetings,
Oracle has modeling tools that capture business rules and processes and
translates them directly into the database.  I have used Oracle's Designer
2000 to create an Entity/Relationhip model which will create my Oracle
database with all its referential integrity constraints.  There are other
tools like Process Modeler, Functional Hierchy which translates business
rules and processes directly into the database.  The actual creation of the
database is click away (once you perform all your design work using the
various tools).  It takes a long time to learn these tools, but it does work
well.  Once the business rules and procedures are captured in the database,
you create your forms based on what's in the database.  This makes creation
of forms easier because you do not need front end edit processing.  If you
already have an Oracle database and want to know about the business rules
and procedures, you could reverse engineer the database.  Documentation of
all business rules and constraints reside in the database.

That is one of the reasons why Oracle surpasses DB2, Sysbase, Informix,
Ingress, and Image.

Has anybody worked with these tools?