A few photos from Prague PostgreSQL Developers' day 2010. Presentations were held by me about monitoring PostgreSQL performance, Tomas Emresz spoke about using Delphi and PostgreSQL to develop web applications, Pavel Baros presented his effort to implement support for materialized views, Julius Stroffek described a project for small company-wide search engine based on PostgreSQL. Zdenek Kotala gave a short lecture about PostgreSQL internals and Pavel Hak from Jyxo demonstrated how the new "hot standby" replication works. The last lecture was about a completely different kind of database - non-relational, schema-less document-oriented database CouchDB, held by Karel Minarik.