Incomplete Answers for Queries over Semistructured Data.
Yaron KanzaWerner NuttYehoshua SagivPublished in: KRDB (1999)
Keyphrases
- semistructured data
- query language
- inconsistent information
- tree patterns
- data model
- semistructured databases
- regular expressions
- regular path queries
- query evaluation
- semi structured
- path expressions
- database
- structured data
- query processing
- query logs
- object oriented
- web search engines
- relational algebra
- range queries
- data sources
- database systems
- query containment
- web data
- keyword queries
- heterogeneous data
- query rewriting
- transitive closure
- conjunctive queries
- structural features
- xml queries
- raw data
- conceptual model
- natural language processing
- nearest neighbor
- search engine