Formalising opencypher Graph Queries in Relational Algebra.
József MartonGábor SzárnyasDániel VarróPublished in: CoRR (2017)
Keyphrases
- relational algebra
- query language
- relational calculus
- database query languages
- relational database systems
- probabilistic databases
- expressive power
- data model
- nested relational
- relational operators
- duplicate elimination
- aggregate functions
- relational data model
- relational model
- normal form
- recursive queries
- join operator
- null values
- complex objects
- sparql queries
- algebraic operations
- transitive closure
- query evaluation
- first order logic
- database
- summary tables
- structured data
- conjunctive queries
- data sources
- sql queries
- range queries
- user defined
- relational query languages
- aggregate queries
- directed acyclic graph
- data integration
- object oriented
- relational databases
- databases