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| Category | Value | ||
| Available via | http://dbpubs.stanford.edu/pub/1999-53 | ||
| Submitted on | 26th of February 2000 | ||
| Author | Goldman, R.; McHugh, J.; Widom, J. | ||
| Title | From Semistructured Data to XML: Migrating the Lore Data Model and Query Language | ||
| Date of publication | 1999 | ||
| Citation | Goldman, R.; McHugh, J.; Widom, J.: From Semistructured Data to XML: Migrating the Lore Data Model and Query Language. WebDB Workshop, 1999 | ||
| Number of pages | 6 | ||
| Language | English | ||
| Project | Lore | ||
| Type | Conference or Journal Paper | ||
| Subject group | Semistructured data | ||
| Abstract | Research on semistructured data over the last several years has focused on data models, query languages, and systems where the database is modeled as some form of labeled, directed graph. The recent emergence of eXtensible Markup Language (XML) as a new standard for data representation and exchange on the World-Wide Web has drawn significant attention. Researchers have casually observed a striking similarity between semistructured data models and XML. While similarities do abound, some key differences dictate changes to any existing data model, query language, or DBMS for semistructured data in order to fully support XML. This paper describes our experiences migrating the Lore database management system for semistructured data to work with XML. We present our modified data model, whose definition was a subtly challenging task given that XML itself is just a textual language. Based on this model, we describe changes to Lorel, Lore's query language. We also briefly discuss changes to Lore's dynamic structural summaries (DataGuides) and the relationship of DataGuides to XML's Document Type Definitions (DTDs). | ||
| Keywords | XML, semistructured data, Lore, Lorel | ||
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| Management of the document by | siroker@db.stanford.edu
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