Uso de XML para Interoperabilidade entre Bases Heterogêneas
Pasqual, Juliana P.
MetadadosMostrar registro completo
Assuntobanco de dados heterogêneos
interoperabilidade entre banco de dados
XML em banco de dados
The coexistence of heterogeneous databases, implemented using different data models, with diversity of language, representation and hardware platforms, become natural to use the technology of database integration for sharing information. With the purpose to provide interoperability between the integrated database and the local databases that compose it, preserving the autonomy of local databases, this work presents a solution based on XML. The result of this work is a decomposition of a SQL expression, introduced to integrate schema, into SQL expressions correspondents to each local schema. The solution presented proposes: 1) the mapping of integrated schema in relation of its components schemas, using the structure of XML language, because of its power and its semantic flexibility and because the XML has a standard for changing information independent of platform or technology; 2) an algorithm based on integrations rules, used for create the integrated schema, and based on information about each local schema of mapping; 3) the utilization of both relational and object/relational model structure and the concepts of class, inheritance, multivalued and composed attribute.
- Teses & Dissertações