Documentation - dev - general
Who else uses the database? Who changes my data?
How do I make changes?
How often is it backed up?
Has the schema changed recently?
How important is my project?
Documentation - dev - specific
What does the schema look like?
What does a specific table look like?
What does a function do?
Which queries are the slowest?
Documentation - never ask
When was it last backed up?
(some you hope you never have to ask)
Centralization