Schema Evolution publication categorizer

... be a Σ1-query. An (equivalent) reformulation of q1 in the presence of C is a Σ2-query, q2, such that q2 gives the same ... ∪ Σ2-database instance that satisfies C. In general, there may exist multiple such reformulations and choosing among ...

Publication - huliganka - 04/16/2013 - 23:38 - 0 comments - 1 attachment

... Mapping composition is a fundamental operation in metadata driven applications. Given a mapping over schemas S1 and S2 and ...

Publication - cat - 04/16/2013 - 03:16 - 0 comments - 1 attachment