CM (Configuration Managment) Best Practices for DBs?

Hi:
I've got a question on a topic I haven't seen discussed before. I have a project with application code and PL/SQL code and an Oracle 10g database that has triggers, constraints, etc. For a Java or C# project the concept of CM and a central code repository works, largely because the CM tool is able to enforce limits on who can do what to a given resource over time. Developers MUST check out the source files before modifying and adding back to the CM tree.
Database objects are more on an honor system. Even if you put the code for the tables, triggers, constraints, packages etc. under CM, nothing prevents a developer or multiple developers from modifying those objects in the development database and never updating the create scripts that are in the CM tree. So given that there are thousands of systems out there with Java/C# or whatever front ends and PL/SQL back ends in databases that have all sorts of DB objects in them, what are the best CM practices? How does a developer know the package he's about to modify is the last one that got pushed to the production server?
Constraints are problematic in several unique ways. They can be created in several places by different syntax (in the table create command; as a stand alone command after the table exist; named or system generated name if defined in the table definition). Things like SQL Developer and Toad can create code trees that contain all the scripts needed to build a database from scratch and a top level build script to run them all, but what's the best structure for that? Do table create scripts JUST define columns and separate scripts create all constraints?
I like to think someone has crossed this particular bridge before and has some answers to my questions. Any takers?
Thanks.

Gaff wrote:
No. With non-DB code, it isn't voluntary. The developer needs to check a file in or out before modifying it and the CM system enforces either that only one person at a time can edit the file or if multiple ones can, the merging of the results. Once the PL/SQL package is in a database, a developer can change it and NOT change the underlying file. I don't agree that there is a difference. All source control systems I have seen allow a copy to be taken or the source to be viewed without checking it out. I have a checked out source file on my PC. I copy it. I check in my changes, I make changes to the copy. I have made a change without changing the checked in source. Just like I could in the database. Should this change make it into the final build? No, and I can't complain when it doesn't, just like the unauthorized change directly in the database is overwritten and lost. I see no difference.
Making changes to database objects directly in the database is a terrible practice, you can enforce the same lack of tolerance for it as you would for any other developer circumventing the source control and deployment process in any other language.
- You tell them not to do it.
- You overwrite their changes if they do do it.
- You fire them if they continue to do it.
>
I think the solution is that by default DB developers have read-only access to the objects. When they identify the pieces that need to change to fix a given bug, some 3rd party (Software Lead? DBA?) grants them CRUD on the identified objects and verifies that their modified code makes it into the CM tree when the bug is fixed.The developer can make their own changes in the Dev database. Changes to the Test database prior to production deployment can only be made by the DBA using scripts from the source control system.
This works flawlessly.

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