This section covers allowable scenarios for composing and revising xml interchanges based on the Ed-Fi data model.

4.1 Compose New XML Interchange Schema

An Ed-Fi interchange schema is an XSD file that groups entities together for bulk data exchange.

• MUST contain at least one domain entity or association.
• MAY contain multiple domain entities and/or associations.
• MUST NOT contain any cardinality statements.
• MUST contain basic documentation.
• SHOULD NOT contain "Interchange" in the name.
• MAY contain extended documentation and use case documentation.

4.2. Extend XML Interchange Schema

The core set of Ed-Fi Standard Interchange Schema can be modified to include new or extended entities.

• MUST contain at least one domain entity or association.
• MAY contain multiple domain entities and/or associations.
• MUST NOT contain entities included in the parent interchange.
• MUST NOT contain any cardinality statements.
• MUST NOT contain entity-level documentation (including extended and use-case documentation).