Database Design & Application Server Design

All,

New to the list and a relative newbie to PostgreSQL.  Please forgive stupid
questions.

Designing an application server for a work order processing (et al)
database.  I have a good handle on sequences, referencial integrity, views,
& the basics.  What books/documentation would you recommend to learn more
about...

 - database design for security
 - database design for performance
 - database design for ease of maintenance
 - triggers and functions

Also, the application will require some complex forms, and printing
graphical reports (currently served from an Access 2000 database.)  What
tools/interfaces/servers would you recommend for the application server?

Is there a tool you would recommend for generating graphical reports to
html?

TIA.

Lane Beneke; IT Manager
Stephenson Millwork Company, Inc.