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Uma Abordagem para Armazenamento de Dados Semi-Estruturados em Bancos de Dados Relacionais


Karine Magalhães, Alberto H.F. Laender, and Altigran Silva

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Abstract

This paper presents an approach to storing semistructured data in relational databases. We focus on semistructured data as extracted from Web pages by a tool called DEByE (Data Extraction By Example), and organized according to its data model, the DEByE Object Model (DEByE-OM). The approach presented here consists in representing the structure of the objects extracted by DEByE by a relational schema and populating the corresponding database accordingly. We also show how to retrieve such objects by automatically transforming high-level query specifications (it query patterns) into SQL queries that are executed over the relational database. Experiments results carried out to evaluate our approach are also described.


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