"Should we have two chapters, one PG and one Oracle, or just provide both examples
embedded in the text?"
Embedding Oracle and Postgres syntax side by side like the installation instructions for them are in the installation docs would make it hard to read and very long. I see 2 worthwhile options:
- Linking Oracle syntax under the Postgres code (seems like the majority of the people here is using Postgres, so I'm thinking it would make more sense embedding the Oracle syntax and not vice versa).
- Adding sections for each supported RDBMS under "Data Models and the Object System". Perhaps a better numbering of the chapters would be in place. For example making the Postgres part section 4.2.1 and the Oracle part section 4.2.2 etc.
I guess it's a matter of preference, but personally I'd prefer to see the latter implemented.