World Wide Web Wrapper Factory (W4F)
What W4F is not
- it is not a query language
- it is not a mediator system
W4F is
- a toolkit to generate wrappers for Web information sources
- it consists of:
- an extraction language called HEL (HTML Extraction Language)
- a mapping language
- some GUI wizards
But...
- A given W4F wrapper deals with one type of Web pages. To wrap a movie database, one will need a wrapper for movie pages and a wrapper for actor pages for instance.
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