A Cost Model to Optimize Queries over Heterogeneous Federations of RDF Data Sources.
Sijin ChengOlaf HartigPublished in: ESWC Workshops (2023)
Keyphrases
- cost model
- data sources
- complex queries
- query processing
- sparql queries
- heterogeneous data
- query optimization
- range queries
- data integration
- query cost
- heterogeneous data sources
- query optimizers
- data model
- databases
- query execution
- linked data
- rdf data
- parallel execution
- query plan
- execution plan
- multi type
- database systems
- regular expressions
- query language
- data warehouse
- join algorithms
- data sets
- olap queries
- efficient processing
- structured data
- semantic web
- query evaluation
- multi dimensional
- data management
- vertical partitioning
- join queries
- spatial join
- xml data
- query optimizer
- path expressions
- relational database systems
- star schema
- relational data
- data points
- database