Characterizing schema mappings via data examples
نویسندگان
چکیده
منابع مشابه
EIRENE: Interactive Design and Refinement of Schema Mappings via Data Examples
One of the first steps in the process of integrating information from multiple sources into a desired target format is to specify the relationships, called schema mappings, between the source schemas and the target schema. In this demonstration, we showcase a new methodology for designing schema mappings. Our system Eirene interactively solicits data examples from the mapping designer in order ...
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Schema mappings are high-level specifications that describe the relationship between two database schemas. Schema mappings are considered to be the essential building blocks in such critical data interoperability tasks as data exchange and data integration. For this reason, they have been the focus of extensive research investigations over the past several years. Since in real-life applications...
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Data exchange (DE) [5, 3] and data coordination [1, 2, 6] are two important settings that were introduced previously in the literature to resolve the problem of integrating information that resides in different sources. A DE setting moves data residing in independent applications, which refer to the same object using the same name, and accesses it through a new target schema. However, a data co...
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Schema mappings come in different flavors: simple correspondences are produced by schema matchers, intensional mappings are used for schema integration. However, the execution of mappings requires a formalization based on the extensional semantics of models. This problem is aggravated if multiple metamodels are involved. In this paper we present extensional mappings, that are based on second or...
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ژورنال
عنوان ژورنال: ACM Transactions on Database Systems
سال: 2011
ISSN: 0362-5915,1557-4644
DOI: 10.1145/2043652.2043656