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Published in:
2006 | OriginalPaper | Chapter
Selectively Storing XML Data in Relations
Authors : Wenfei Fan, Lisha Ma
Published in: Database and Expert Systems Applications
Publisher: Springer Berlin Heidelberg
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This paper presents a new framework for users to select relevant data from an
xml
document and store it in an existing relational database, as opposed to previous approaches that shred the entire
xml
document into a newly created database of a newly designed schema. The framework is based on a notion of
xml2db
mappings. An
xml2db
mapping extends a (
possibly recursive
)
dtd
by associating element types with semantic attributes and rules. It extracts either part or all of the data from an
xml
document, and generates
sql
updates to increment an existing database using the
xml
data. We also provide an efficient technique to evaluate
xml2db
mappings in parallel with
sax
parsing. These yield a systematic method to store
xml
data selectively in an existing database.