Datetime usually is define as datetime.
What if I want a column for just date and another column for time?
Can I define [date] or [time]?
Out of the box - no. While sql has datatypes date and time you can extend entity framework http://msdn.microsoft.com/en-us/library/vstudio/dd456844(v=vs.100).aspx with datatypes [Date] and [Time] or implement logic splitting DateTime in two values.