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- Introduction to Datalog Programming Language
Datalog is a powerful and expressive programming language that is used to query relational databases and knowledge graphs It is a declarative language that allows you to specify what you want to achieve rather than how to achieve it
- An introduction to Datalog - Michelin IT Engineering Blog
Datalog is a declarative query language, derived from Prolog Its logic is based on first order logic and more specifically logical clauses expressed as Horn clauses Its origins date back to the beginning of logic programming, and is often being used to describe systems, or to build domain models
- 8. 1 Datalog Syntax - University of Wisconsin–Madison
A Datalog program is defined as a finite set of Datalog rules In Datalog we have two different types of schemas: Extensional Schema: this consists of extensional relations (EDBs), which occur only in the right-hand-side of the rules Such relations are intuitively the "input" of the Datalog pro-gram
- Datalog - Hey There Buddo!
Datalog is bottom up and prolog is top down In a sense datalog feels “push” and prolog feels “pull” These viewpoints can be translated to some degree to each other Prolog can gain some benefits of datalog via tabling, which is a memoization technique
- Datalog - Stanford University
Expressive Power of Datalog Without recursion, Datalog can express all and only the queries of core relational algebra The same as SQL select-from-where, without aggregation and grouping But with recursion, Datalog can express more than these languages Yet still not Turing-complete
- An Overview of Datalog - GitHub Pages
Datalog is a logical query language It exists somewhere between relational algebra (the formal theory behind SQL) and Prolog, but is closer in motivation to the former than the later It was invented to apply some of the principles of logic programming to database theory
- What is Datalog? - Oxford Semantic Technologies
Datalog is a programming language for logical inference It is declarative, which means that it states the required result without describing the steps needed in order to achieve it (the engine executing the program is responsible for deciding what these steps should be)
- Datalog - Glossary - DevX
Datalog is a declarative programming language specifically designed for querying and maintaining knowledge bases stored in relational databases It is a subset of the Prolog language and is optimized for efficient evaluation of recursive queries
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