Schema Evolution publication categorizer

... or XML schemas, and can be independently designed. In addition to the source-to-target mappings, we consider as part of the ... at the target. We define the semantics of query answering in such an integration scenario, and design two novel algorithms, basic query ...

Publication - huliganka - 04/17/2013 - 00:38 - 0 comments - 1 attachment

... 180 KB In order to formulate a meaningful XML query, a user must have some knowledge ... assumed by the user, thus causing the query to fail. In this paper, we try to solve this query and data schema mismatching problem ...

Publication - huliganka - 04/16/2013 - 23:49 - 0 comments - 1 attachment

... 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

... 250.47 KB In this paper we motivate and describe materialized views, their applications, ... describe some of the view maintenance techniques proposed in the literature in terms of our taxonomy. Finally, we consider new and promising application ...

Publication - cat - 04/16/2013 - 16:05 - 0 comments - 1 attachment