Paper P542 pagesReviewed manuscript
Semantic Query Federation over Heterogeneous Databases
How can canonical queries be rewritten through typed mappings into source-native plans?
Question and scope
mapping-aware rewriting with pushdown, join placement, capability limits, partial availability, and semantic reconciliation.
Research artifacts
rewrite rules, capability catalog, heterogeneous source example, planner, and failure semantics.
Evidence and evaluation
native-result equivalence, transfer volume, call counts, and plan comparisons.
Claim boundary
arbitrary pushdown or transparent source failure.