Development guidelines between DBA & developer

Hi all,  

I'm looking for guidelines , how should be the interactions between DBA team and other development teams.  

For example -
  Each new table has to have description ...   Define table main queries ..    

I'm looking for an optimal way for defining the work between the development team and the DBA teams.
I'm aware of , that for every company , there are some differences , but I think that there are some big common between the guidelines.    

I define a developer , as person with a medium knowledge in oracle , and expert in software engineer.  

DBA - as the opposite.
Amihay Gonen

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