resources
SQL Databases for Linux
DMOZ: Top: Computers: Software: Databases: Open Source

creating tables
creating tables (w/timestamp stuff)
MySQL forums ... syntax on creating multiple tables

PostgreSQL
Embedding SQL in other languages
Chapter 27. libpq - C Library

MySQL
Foreign keys and MySQL
The Site With the Lamp, Foreign Keys and mysql

Field Types
Field Types

RAM storage, buffering, caching access, etc.
Table types in MySQL: Part 1 - HEAP tables

blobs & multimedia types
Handling huge BLOB fields with DBI and MySQL

Perl::DBI & MySQL
DBD::mSQL / DBD::mysql - mSQL and mysql drivers for the Perl5 Database Interface (DBI)
The DBI Interface
Tuning
Database normalization the easier way

MySQL & PHP
Setting up a PHP 5 with Apache 2 and MySQL 4.1.3, Builder - AU Article

MySQL & C API
Using the MySQL Client Library to Write Your Own Programs
MySQL for Linux on POWER, Part 2: Developing applications
The MySQL C API, Linux Focus Article
Apache C API

Benchmarking
Apache Hello World Benchmarks