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Please use this identifier to cite or link to this item: http://hdl.handle.net/2081/1144

Title: Extending SGML to accommodate database functions: A Methodological Overview
Authors: Dillon, A.
Sengupta, A.
Keywords: Metadata
SGML
Database management systems
Query formulation
Object oriented databases
Relational databases
Issue Date: 1997
Publisher: Wiley
Citation: This item is not the definitive copy. Please use the following citation when referencing this material: Sengupta, A. and Dillon, A. (1997) Extending SGML to accommodate database functions: A Methodological Overview. Journal of the American Society for Information Science, 48(7), 629-637.
Abstract: A method for augmenting an SGML document repository with database functionality is presented. SGML (ISO 8879, 1986) has been widely accepted as a standard language for writing text with added structural information that gives the text greater applicability. Recently there has been a trend to use this structural information as meta-data in databases. The complex structure of documents, however, makes it difficult to directly map the structural information in documents to database structures. In particular, the flat nature of relational databases makes it extremely difficult to model documents that are inherently hierarchical in nature. Consequently, documents are modeled in object-oriented databases (Abiteboul, Cluet, & Milo, 1993), and object-relational databases (Hoist, 1995), in which SGML documents are mapped into the corresponding database models and are later reconstructed as necessary. However, this mapping strategy is not natural and can potentially cause loss of information in the original SGML documents. Moreover, interfaces for building queries for current document databases are mostly built on form-based query techniques and do not use the ''look and feel'' of the documents. This article introduces an implementation method for a complex-object modeling technique specifically for SGML documents and describes interface techniques tailored for text databases. Some of the concepts for a Structured Document Database Management System (SDDBMS) specifically designed for SGML documents are described. A small survey of some current products is also presented to demonstrate the need for such a system.
URI: http://hdl.handle.net/123456789/1144
Appears in Collections:Publications: Refereed Journal Articles

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