Apache CouchDB: The CouchDB Project
“Apache CouchDB is a document-oriented database that can be queried and indexed in a MapReduce fashion using JavaScript. CouchDB also offers incremental replication with bi-directional conflict detection and resolution.”
Graffle-2-SQL: Convert OmniGraffle database charts to SQL
Pretty slick (sounding) tool for using OmniGraffle as a database design tool. Targeted to MySQL which is nice.
Rapid Application Development: An Entity Relationship Diagram Example
Good details on all of the elements available in ER Diagrams
The Subversion trunk to an interesting project named “HyperDB” which adds a DB layer giving more flexibility for query balancing and all sorts of nifty DB-stuff for WordPress (mu)
Performance Tuning Best Practices for MySQL – Google Video
Video from Google itself on tuning MySQL for better performance