Datalog and Logic Databases by Sergio Greco

By Sergio Greco

Using common sense in databases begun within the overdue Nineteen Sixties. within the early Seventies Codd formalized databases when it comes to the relational calculus and the relational algebra. an immense effect at the use of good judgment in databases used to be the advance of the sphere of good judgment programming. common sense presents a handy formalism for learning classical database difficulties and has the real estate of being declarative, that's, it Read more...

summary: using good judgment in databases began within the past due Sixties. within the early Nineteen Seventies Codd formalized databases by way of the relational calculus and the relational algebra. a massive impression at the use of common sense in databases was once the advance of the sphere of good judgment programming. common sense presents a handy formalism for learning classical database difficulties and has the real estate of being declarative, that's, it permits one to specific what she wishes instead of easy methods to get it. for a very long time, relational calculus and algebra have been thought of the relational database languages. despite the fact that, there are basic operations, reminiscent of computing the transitive closure of a graph, which can't be expressed with those languages. Datalog is a declarative question language for relational databases in response to the good judgment programming paradigm. one of many peculiarities that distinguishes Datalog from question languages like relational algebra and calculus is recursion, which provides Datalog the aptitude to precise queries like computing a graph transitive closure. contemporary years have witnessed a revival of curiosity in Datalog in a number of rising program domain names equivalent to facts integration, details extraction, networking, application research, safety, cloud computing, ontology reasoning, etc. the purpose of this publication is to give the fundamentals of Datalog, a few of its extensions, and up to date purposes to diversified domain names

Show description

Read or Download Datalog and Logic Databases PDF

Similar database storage & design books

Microsoft Sams Teach Yourself SQL Server 2005 Express in 24 Hours

Written with readability and a down-to-earth technique, Sams train your self SQL Server 2005 show in 24 Hours covers the fundamentals of Microsoft's most modern model of SQL Server. professional writer Alison Balter takes you from uncomplicated suggestions to an intermediate point in 24 one-hour classes. you are going to research the entire easy initiatives invaluable for the management of SQL Server 2005.

Microsoft sql server 2008 integration services problem-design-solution

This e-book is a treasury for ETL builders / architects. it's very various from different ETL books within the method that it truly is written with a top-to-bottom process rather than targeting information of an ETL software. every one bankruptcy offers an issue that an ETL developer/architect will face in the course of a true undertaking.

Database Programming with JDBC and Java

Java and databases make a strong blend. Getting the 2 aspects to interact, although, takes a few effort--largely simply because Java bargains in gadgets whereas so much databases don't. This booklet describes the traditional Java interfaces that make moveable object-oriented entry to relational databases attainable and gives a powerful version for writing purposes which are effortless to take care of.

Learn SQL Server Administration in a Month of Lunches

Microsoft SQL Server is utilized by hundreds of thousands of companies, ranging in measurement from Fortune 500s to small outlets world wide. no matter if you are simply getting began as a DBA, assisting a SQL Server-driven program, or you have been drafted through your workplace because the SQL Server admin, you don't need a thousand-page e-book to wake up and working.

Additional resources for Datalog and Logic Databases

Sample text

1984] and Minker [1988]. An overview of logic programming and databases can be found in Ceri et al. [1990]; see also Minker et al. [2014]. Fixpoint semantics was explored in the context of logic programming in van Emden and Kowalski [1976] and Apt and van Emden [1982] and in the database context in Chandra and Harel [1982]. Resolution was originally proposed in the context of automatic theorem proving [Robinson, 1965], while SLD resolution was developed in [van Emden and Kowalski, 1976]. ese form the basis of logic programming as introduced by Kowalski [1974] (see also Kowalski [1986]).

1984] and Minker [1988]. An overview of logic programming and databases can be found in Ceri et al. [1990]; see also Minker et al. [2014]. Fixpoint semantics was explored in the context of logic programming in van Emden and Kowalski [1976] and Apt and van Emden [1982] and in the database context in Chandra and Harel [1982]. Resolution was originally proposed in the context of automatic theorem proving [Robinson, 1965], while SLD resolution was developed in [van Emden and Kowalski, 1976]. ese form the basis of logic programming as introduced by Kowalski [1974] (see also Kowalski [1986]).

I / for any i n. I /. 2. ;/. TPD /. us, this approach provides an alternative constructive definition of the semantics of a Datalog program. 1. a; d /g I4 : us, I4 is the least fixpoint of TPD , and, indeed, it is equal to the least model of PD (cf. 3). 3 PROOF-THEORETIC SEMANTICS e last semantics for Datalog programs is based on proofs. Specifically, the proof-theoretic semantics defines the semantics of a Datalog program P and a database D in terms of the set of ground atoms that can be proven from D using the Datalog rules of P as proof rules.

Download PDF sample

Rated 4.27 of 5 – based on 31 votes