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Wrapup of the PHP UK Conference 2010. Uploaded slides of my talk "RDBMS in the social networks age" about graphs in the database.
Speaking at the PHP Barcelona Conference 2009. Talk: "Trees in the Database: Advanced Data Structures".
Graphs in the database: how to store a graph data structure in a DBMS, and answer the most common queries typical of social networks, like "You might also know" or "You might also like", or "How you are connected to XYZ" (degrees of separation).
How to store a graph data structure in a DBMS, and query it to solve many of the problems of social networks.
Wrap-up of the Dutch PHP Conference, Amsterdam, 11-13 June 2009.
Speaking at the Dutch PHP Conference 2009. Talk: "Trees in the Database: Advanced Data Structures".
Exploring database delimited identifiers and case sensitivity: the effect of quoting table and field names in the various DBMS.
By popular request, I've updated my articles explaining how to retrieve meta data from your DBMS (Firebird SQL, PostgreSQL, Oracle, SQL Server). Have fun.
20 February 2007
PostgreSQL table audit: a tutorial featuring a working example with triggers and a PL/TCL function. Or: for once in a while, PHP is not the right tool ;-)
Cheat sheet for PostgreSQL 8. A handy reference of the PostgreSQL datatypes, an useful query reference (with an eye on the INFORMATION_SCHEMA tables) and a list of the internal PostgreSQL functions.