2 operating system in 1989 – and querying microsoft sql server 2012 pdf to the current day. The RTM version is 14.
It is intended as a replacement for MSDE. Two additional editions provide a superset of features not in the original Express Edition. The compact edition is an embedded database engine. It is limited to 4 GB maximum database size and cannot be run as a Windows service, Compact Edition must be hosted by the application using it.
5 version includes support for ADO. Starting early 2016, Microsoft made this version free of charge to the public.
It can also be used as an embedded database. HP base on the Fast Track architecture.