csdl msl ssdl in entity framework
Conceptual Schema Definition Language(CSDL):
It contains Model classes and relationships.The file extension is .csdl
Storage Schema Definition Language(SSDL):
It is storage model otherwise called as logical model.
it includes Tables,Views,StoredProcedures and their relationships.The file extension is .ssdl
Mapping Specification Language(MSL):
It is mapping between Conceptual and Storage models.The file extension is .msl