Core data services extensibility for entity-relationship models

摘要: Embodiments extend the relational model and query language to recognize features of tables higher level entity-relationship models (ERMs). Extension is implemented in data design (DDL) incorporate tables, entities (and views) having custom-defined/semantic structure, rather than being limited primitive types (e.g. flat as standard SQL). The extension includes an indication that a include all active elements for each table or entity active. can be chained has been extended.