A free open-source database server which endeavours to conform to the SQL standard and which is extensible with server-side functions and provides high performance, particularly to write-heavy applications.
- highly conformant to the SQL specification
- supports transactions wrapping database changes (CREATE TABLE, etc)
- has a very full-featured set of types and functions related for time and date handling
- allows in-database function extensions in a variety of languages
DAViCal has implicit dependencies on some of these features.