G. E. Blake, M. P. Consens, I. J. Davis, P. Kilpelainen, E. Kuikka, P.- A. Larson, T. Snider, and F. W. Tompa, "Text / Relational Database Management Systems: Overview and Proposed SQL Extensions," Dept. of Computer Science Technical Report CS-95-25, University of Waterloo (June 1995) 31 pp.  Home/Search   Document Details and Download   Summary   Related Articles

....way that is often unnatural. Furthermore, applications must later reassemble document components from scattered fragments through extensive join operations that reconstruct their nesting structure and ordering[19] We propose instead that structured text be recognized as a datatype in its own right[2, 3]. Operators to extract and manipulate subtexts can then be defined to provide application programs with effective means to access whole texts or text fragments as needed. Using this approach, a document can be stored as a single text value or it can be fragmented to the extent that is ....

....texts, such as an encyclopedia or dictionary, variations in expression among seemingly similar items is commonplace; rigid conformation to detailed schemas is rare. We have designed and implemented a federated database system that manages text data alongside more conventional relational data[2]. We have found that flexible fulltext search can then be used in conjunction with tree operators that address the structure of text, and that those two aspects can be accommodated within an extended SQL. Our language extensions have been accepted for progression by ISO s SQL MM committee[7] and ....

G. E. Blake, M. P. Consens, I. J. Davis, P. Kilpelainen, E. Kuikka, P.- A. Larson, T. Snider, and F. W. Tompa, "Text / Relational Database Management Systems: Overview and Proposed SQL Extensions," Dept. of Computer Science Technical Report CS-95-25, University of Waterloo (June 1995) 31 pp.

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