Cost-based optimization of aggregation star queries on hierarchically clustered data warehouses.
Aris TsoisNikos KarayannidisTimos K. SellisDimitri TheodoratosPublished in: DMDW (2002)
Keyphrases
- data warehouse
- query plan
- star schema
- query execution
- query workloads
- bitmap indices
- data integration
- data sources
- olap queries
- data warehousing
- on line analytical processing
- aggregate views
- business intelligence
- view maintenance
- data cube
- decision support
- multidimensional databases
- fact table
- multidimensional data model
- query processing
- summary tables
- data marts
- databases
- view selection
- star schemas
- join queries
- aggregate queries
- data mining
- cost model
- olap query processing
- database
- query evaluation
- query optimization
- data management
- query language
- response time
- data warehouse environments
- olap systems
- complex queries
- materialized views
- multi dimensional
- external data
- relational databases
- efficient processing
- external data sources
- multidimensional data
- data analysis
- online analytical processing
- data partitioning
- transitive closure
- statistical databases
- range queries
- similarity search
- data sets