Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

Relational databases. --- Bases de données relationnelles --- Oracle (Computer file)

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

SQL (Computer program language) --- Relational databases. --- Bases de données relationnelles --- Sql (langage de programmation)

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

database management --- Information systems --- relationele databanken --- Relational databases. --- Bases de données relationnelles --- Bases de données relationnelles

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

programmeertalen --- database management --- Information systems --- Oracle --- Bases de données relationnelles --- Oracle (Computer file) --- Oracle (Computerbestand) --- Oracle (Fichiers d'ordinateur) --- Relational databases --- Relationele databases --- Bases de données relationnelles

Choose an application

• Reference Manager
• EndNote
• RefWorks (Direct export to RefWorks)

The use of logic in databases started in the late 1960s. In the early 1970s Codd formalized databases in terms of the relational calculus and the relational algebra. A major influence on the use of logic in databases was the development of the field of logic programming. Logic provides a convenient formalism for studying classical database problems and has the important property of being declarative, that is, it allows one to express what she wants rather than how to get it. For a long time, relational calculus and algebra were considered the relational database languages. However, there are simple operations, such as computing the transitive closure of a graph, which cannot be expressed with these languages. Datalog is a declarative query language for relational databases based on the logic programming paradigm. One of the peculiarities that distinguishes Datalog from query languages like relational algebra and calculus is recursion, which gives Datalog the capability to express queries like computing a graph transitive closure. Recent years have witnessed a revival of interest in Datalog in a variety of emerging application domains such as data integration, information extraction, networking, program analysis, security, cloud computing, ontology reasoning, and many others. The aim of this book is to present the basics of Datalog, some of its extensions, and recent applications to different domains.

Datalog (Computer program language) --- Relational databases. --- Logic design --- Logic programming. --- Bases de données relationnelles --- Structure logique --- Programmation logique --- Data processing. --- Informatique