caa a22 4500 475799194 CHVBK 20180406123732.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1023/A:1008715719890 doi (NATIONALLICENCE)springer-10.1023/A:1008715719890 Producing Interoperable Queries for Relational and Object-Oriented Databases [Elektronische Daten] [Ya-Hui Chang, Louiqa Raschid] In this paper, we develop techniques to produce interoperable queries with object and relational databases. A user poses a local query in a local query language, against a local object or relational schema. We transparently produce appropriate queries with respect to a remote target object or relational schema, corresponding to some remote database which contains data relevant to the user's query. Mapping knowledge to resolve representational heterogeneities in local and remote schemas is expressed in a canonical representation, CRmapping, and is independent of the particular data model. A canonical representation CRquery is also used to resolve heterogeneities of query languages. A set of heterogeneous transformation algorithms define the appropriate transformations from the local queries to the remote queries. The use of canonical representations (CR) allows us to represent queries independent of the particular query language, and to resolve representational conflicts in a uniform manner, independent of models and query languages. Kluwer Academic Publishers, 2000 heterogeneous databases nationallicence interoperable query processing nationallicence canonical representations nationallicence representational conflicts nationallicence wrappers nationallicence Chang Ya-Hui Department of Computer Science, National Taiwan Ocean University, Taiwan, Republic of China aut Raschid Louiqa Smith School of Business and UMIACS, University of Maryland, USA aut Journal of Intelligent Information Systems Kluwer Academic Publishers 14/1(2000-03-01), 51-75 0925-9902 14:1<51 2000 14 10844 https://doi.org/10.1023/A:1008715719890 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1023/A:1008715719890 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chang Ya-Hui Department of Computer Science, National Taiwan Ocean University, Taiwan, Republic of China aut NATIONALLICENCE 700 1- Raschid Louiqa Smith School of Business and UMIACS, University of Maryland, USA aut NATIONALLICENCE 773 0- Journal of Intelligent Information Systems Kluwer Academic Publishers 14/1(2000-03-01), 51-75 0925-9902 14:1<51 2000 14 10844 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer