The Ed-Fi Unifying Data Model Handbook is a searchable reference that includes definitions for every entity and element in the Ed-Fi Data Model. The UDM Handbook complements the visual UDM diagrams by providing detailed type specifications, cardinality, usage, enumeration lists, an XSD (normative) and SQL (non-normative) expression, and other information about the elements and entities that make up the Ed-Fi Data Model.
Link
The following link will take you to the Unifying Data Model Handbook:
Ed-Fi Unifying Data Model Handbook