Queries with Incomplete Answers over Semistructured Data.
Yaron KanzaWerner NuttYehoshua SagivPublished in: PODS (1999)
Keyphrases
- semistructured data
- query language
- inconsistent information
- tree patterns
- semistructured databases
- data model
- structured data
- regular path queries
- regular expressions
- semi structured
- keyword queries
- query evaluation
- path expressions
- database
- database systems
- heterogeneous data
- conjunctive queries
- query processing
- xml data
- raw data
- query logs
- object oriented
- information extraction
- information retrieval
- search engine
- probabilistic databases
- knowledge discovery
- xml queries
- pattern matching
- relational database systems
- integrity constraints