From MSDN:
Error 11007: Entity Type Is Not Mapped
This error occurs when an entity type in the conceptual model is not mapped to the data source. To resolve this error, map the entity type to the data source. Look at the MSDN link
How to: Map Entities to Database Tables
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…