Portal de Periódicos da CAPES

Increasing the Power of Hypertext Search with Relational Queries

1990; Taylor & Francis; Volume: 2; Issue: 1 Linguagem: Inglês

10.1080/09558543.1990.12031171

0955-8543

Leonard Gallagher, Richard Furuta, P. David Stotts,

Semantic Web and Ontologies

We describe an SQL relational database schema for representing the objects in HyperCard, along with a technique for automatically populating this schema from a HyperCard stack using the facilities in HyperTalk with calls to the database manager. The standard relational database query language SQL can then be used to perform more general hypertext searches than are possible with the string search feature found in most hypertext browsing environments. Semiautomatic updates of the content of a hypertext are also possible using SQL updates on the object representations in the database to trigger corresponding HyperCard updates on the objects themselves. We describe a prototype implementation and present several example queries and updates to motivate this approach. These techniques, although demonstrated here specifically using HyperCard and Oracle for Macintosh, are generally applicable to a wide range of hypertext systems and relational databases.