Joshua D. Drake wrote: > On Tue, 08 Jan 2008 16:28:11 -0800 > Eric Davies <eric@xxxxxxxxxxxxx> wrote: > > 3. To what extent was your choice of PostgreSQL as a development > > platform based primarily on its extensibility features? > > There is no other open source database that can compare with > PostgreSQL's extensibility, reliability and scalability. AFAIK there is no other database system _at all_ that can compete with PostgreSQL's extensibility. On Postgres, you can create your own: - functions (common functions; "set-returning" functions; aggregate functions) - types - operators - indexing access methods (in particular, indexing for your own types) - PL languages (i.e. you can create language handler for whatever suits you). This means there are handlers already available for Python, Tcl, Perl, PHP, sh, and others. -- Alvaro Herrera http://www.CommandPrompt.com/ PostgreSQL Replication, Consulting, Custom Development, 24x7 support ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match