XCRI CAP Implementation Patterns

From Xcri

[edit] Architecture Patterns

• In the simple aggregation pattern, each provider offers its catalog as an XML file that can be periodically downloaded by an aggregator. The aggregator replaces any previous information about the provider and their courses with the latest data.
• the delta update pattern follows the same pattern as the Open Archives Protocol for Metadata Harvesting (OAI-PMH). In this pattern, each provider offers an API where aggregators can obtain an XML catalog file containing information about changes since a specified date.

[edit] Other Implementation Patterns

• Using a static XML file
• Supporting XQuery
• Filtering courses by subject