What Encosia said is correct, but I wanted to add a link to ScottGu's announcement that explains in more detail: http://weblogs.asp.net/scottgu/archive/2010/06

What Encosia said is correct, but I wanted to add a link to ScottGu's announcement that explains in more detail: http://weblogs.asp.net/scottgu/archive/2010/06/30/new-embedded-database-support-with-asp-net.aspx http://weblogs.asp.net/scottgu/archive/2010/06/30/new-embedd... This announcement moves SQL CE fully into the space where it actually competes with Vista DB (previously CE was primarily used only by desktop/mobile/embedded apps). I wonder if that has any bearing on the decision to kill off Vista DB?