Logic In Databases

Author : C. J. Date
Publisher : Trafford Publishing
Page : 461 pages
File Size : 53,9 Mb
Release : 2007
Category : Computers
ISBN : 9781425122904

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Logic and Databases by C. J. Date Pdf

Logic and databases are inextricably intertwined. The relational model in particular is essentially just elementary predicate logic, tailored to fit the needs of database management. Now, if you're a database professional, I'm sure this isn't news to you; but you still might not realize just how much everything we do in the database world is - or should be! - affected by predicate logic. Logic is everywhere. So if you're a database professional you really owe it to yourself to understand the basics of formal logic, and you really ought to be able to explain (and perhaps defend) the connections between formal logic and database management. And that's what this book is about. What it does is show, through a series of partly independent and partly interrelate essays, just how various crucial aspects of database technology-some of them very familiar, others maybe less so- are solidly grounded in formal logic. It is divided into five parts: *Basic Logic *Logic and Database Management *Logic and Database Design *Logic and Algebra *Logic and the Third Manifesto There's also a lengthy appendix, containing a collection of frequently asked questions (and some answers) on various aspects of logic and database management. Overall, my goal is to help you realize the importance of logic in everything you do, and also- I hope- to help you see that logic can be fun.

Author : Stefano Ceri,Georg Gottlob,Letizia Tanca
Publisher : Springer Science & Business Media
Page : 295 pages
File Size : 49,6 Mb
Release : 2012-12-06
Category : Computers
ISBN : 9783642839528

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Logic Programming and Databases by Stefano Ceri,Georg Gottlob,Letizia Tanca Pdf

The topic of logic programming and databases. has gained in creasing interest in recent years. Several events have marked the rapid evolution of this field: the selection, by the Japanese Fifth Generation Project, of Prolog and of the relational data model as the basis for the development of new machine archi tectures; the focusing of research in database theory on logic queries and on recursive query processing; and the pragmatic, application-oriented development of expert database systems and of knowledge-base systems. As a result, an enormous amount of work has been produced in the recent literature, coupled with the spontaneous growth of several advanced projects in this area. The goal of this book is to present a systematic overview of a rapidly evolving discipline, which is presently not described with the same approach in other books. We intend to introduce stu dents and researchers to this new discipline; thus we use a plain, tutorial style, and complement the description of algorithms with examples and exercises. We attempt to achieve a balance be tween theoretical foundations and technological issues; thus we present a careful introduction to the new language Datalog, but we also focus on the efficient interfacing of logic programming formalisms (such as Prolog and Datalog) with large databases.

Author : Jan Chomicki,Gunter Saake
Publisher : Springer Science & Business Media
Page : 456 pages
File Size : 53,7 Mb
Release : 1998-03-31
Category : Computers
ISBN : 0792381297

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Logics for Databases and Information Systems by Jan Chomicki,Gunter Saake Pdf

Time is ubiquitous in information systems. Almost every enterprise faces the problem of its data becoming out of date. However, such data is often valu able, so it should be archived and some means to access it should be provided. Also, some data may be inherently historical, e.g., medical, cadastral, or ju dicial records. Temporal databases provide a uniform and systematic way of dealing with historical data. Many languages have been proposed for tem poral databases, among others temporal logic. Temporal logic combines ab stract, formal semantics with the amenability to efficient implementation. This chapter shows how temporal logic can be used in temporal database applica tions. Rather than presenting new results, we report on recent developments and survey the field in a systematic way using a unified formal framework [GHR94; Ch094]. The handbook [GHR94] is a comprehensive reference on mathematical foundations of temporal logic. In this chapter we study how temporal logic is used as a query and integrity constraint language. Consequently, model-theoretic notions, particularly for mula satisfaction, are of primary interest. Axiomatic systems and proof meth ods for temporal logic [GHR94] have found so far relatively few applications in the context of information systems. Moreover, one needs to bear in mind that for the standard linearly-ordered time domains temporal logic is not re cursively axiomatizable [GHR94]' so recursive axiomatizations are by necessity incomplete.

Author : Dino Pedreschi,Carlo Zaniolo
Publisher : Springer Science & Business Media
Page : 516 pages
File Size : 49,5 Mb
Release : 1996-10-02
Category : Computers
ISBN : 3540618147

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Logic in Databases by Dino Pedreschi,Carlo Zaniolo Pdf

This book constitutes the strictly refereed post-workshop proceedings of the International Workshop on Logic in Databases, LID'96, held in San Miniato, Italy, in July 1996, as the final meeting of an EC-US cooperative activity. The volume presents 21 revised full papers selected from 49 submissions as well as 3 invited contributions and a summary of a panel discussion on deductive databases: challenges, opportunities and future directions. The retrospective survey on logic and databases by Jack Minker deserves a special mention: it is a 56-page overview and lists 357 references. The papers are organized in sections on uncertainty, temporal and spatial reasoning, updates, active databases, semantics, advanced applications, query evaluation, language extensions, and logic constructs and expressive power.

Author : B. Plotkin
Publisher : Springer Science & Business Media
Page : 445 pages
File Size : 43,5 Mb
Release : 2012-12-06
Category : Mathematics
ISBN : 9789401108201

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Universal Algebra, Algebraic Logic, and Databases by B. Plotkin Pdf

Modern algebra, which not long ago seemed to be a science divorced from real life, now has numerous applications. Many fine algebraic structures are endowed with meaningful contents. Now and then practice suggests new and unexpected structures enriching algebra. This does not mean that algebra has become merely a tool for applications. Quite the contrary, it significantly benefits from the new connections. The present book is devoted to some algebraic aspects of the theory of databases. It consists of three parts. The first part contains information about universal algebra, algebraic logic is the subject of the second part, and the third one deals with databases. The algebraic material of the flI'St two parts serves the common purpose of applying algebra to databases. The book is intended for use by mathematicians, and mainly by algebraists, who realize the necessity to unite theory and practice. It is also addressed to programmers, engineers and all potential users of mathematics who want to construct their models with the help of algebra and logic. Nowadays, the majority of professional mathematicians work in close cooperation with representatives of applied sciences and even industrial technology. It is neces sary to develop an ability to see mathematics in different particular situations. One of the tasks of this book is to promote the acquisition of such skills.

Author : Sergio Greco,Cristian Molinaro
Publisher : Springer Nature
Page : 155 pages
File Size : 47,9 Mb
Release : 2022-05-31
Category : Computers
ISBN : 9783031018541

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Datalog and Logic Databases by Sergio Greco,Cristian Molinaro Pdf

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.

Author : C. J. Date
Publisher : Technics Publications
Page : 336 pages
File Size : 53,9 Mb
Release : 2020-06-06
Category : Computers
ISBN : 9781634628778

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Logic and Relational Theory by C. J. Date Pdf

This book is a revised, upgraded, and hugely improved version of an earlier one called Logic and Databases. Although it’s effectively a brand new book, therefore, the following remarks from that earlier book are still relevant here. First, logic and databases are inextricably intertwined. The relational model itself is essentially just elementary logic, tailored to database needs. Now, if you’re a database professional, this won’t be news to you—but you still might not realize just how much everything we do in the database world is (or should be!) affected by logic. Logic is fundamental, and everywhere. As a database professional, therefore, you owe it to yourself to understand the basics of formal logic, and you ought to be able to explain (and perhaps defend) the connections between formal logic and database technology. And that’s what this book is about. What it does is show, through a series of partly independent, partly interrelated essays, just how various crucial aspects of database technology—some of them very familiar, others maybe less so—are solidly grounded in formal logic. Overall, the goal is to help you realize the importance of logic in everything you do, and also, I hope, to help you see that logic can be fun.

Author : Raghu Ramakrishnan
Publisher : Springer Science & Business Media
Page : 299 pages
File Size : 42,9 Mb
Release : 2012-12-06
Category : Computers
ISBN : 9781461522072

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Applications of Logic Databases by Raghu Ramakrishnan Pdf

The premise behind developing powerful declarative database languages is compelling: by enabling users to specify their queries (and their integrity constraints) in a clear, non-operational way, they make the user's task easier, and provide the database system with more opportunities for optimization. Relational database systems offer a striking proof that this premise is indeed valid. The most popular relational query language, SQL, is based upon relational algebra and calculus, i.e., a small fragment of first-order logic, and the ease of writing queries in SQL (in comparison to more navigational languages) has been an important factor in the commercial success of relational databases. It is well-known that SQL has some important limitations, in spite of its success and popUlarity. Notably, the query language is non-recursive, and support for integrity constraints is limited. Indeed, recognizing these problems, the latest standard, SQL-92, provides increased support for integrity constraints, and it is anticipated that the successor to the SQL-92 standard, called SQL3, RECURSIVE UNION operation [1]. Logic database systems have will include a concentrated on these extensions to the relational database paradigm, and some systems (e.g., Bull's DEL prototype) have even incorporated object-oriented features (another extension likely to appear in SQL3).

Author : Jan Chomicki,Ron van der Meyden,Gunter Saake
Publisher : Springer Science & Business Media
Page : 375 pages
File Size : 47,5 Mb
Release : 2011-06-28
Category : Computers
ISBN : 9783642186905

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Logics for Emerging Applications of Databases by Jan Chomicki,Ron van der Meyden,Gunter Saake Pdf

In this era of heterogeneous and distributed data sources, ranging from semistructured documents to knowledge about coordination processes or workflows, logic provides a rich set of tools and techniques with which to address the questions of how to represent, query and reason about complex data. This book provides a state-of-the-art overview of research on the application of logic-based methods to information systems, covering highly topical and emerging fields: XML programming and querying, intelligent agents, workflow modeling and verification, data integration, temporal and dynamic information, data mining, authorization, and security. It provides both scientists and graduate students with a wealth of material and references for their own research and education.

Author : Jack Minker
Publisher : Morgan Kaufmann Publishers
Page : 760 pages
File Size : 48,7 Mb
Release : 1988
Category : Computers
ISBN : UOM:39015013474682

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Foundations of Deductive Databases and Logic Programming by Jack Minker Pdf

Foundations of Deductive Databases and Logic Programming focuses on the foundational issues concerning deductive databases and logic programming. The selection first elaborates on negation in logic programming and towards a theory of declarative knowledge. Discussions focus on model theory of stratified programs, fixed point theory of nonmonotonic operators, stratified programs, semantics for negation in terms of special classes of models, relation between closed world assumption and the completed database, negation as a failure, and closed world assumption. The book then takes a look at negation as failure using tight derivations for general logic programs, declarative semantics of logic programs with negation, and declarative semantics of deductive databases and logic programs. The publication tackles converting AND-control to OR-control by program transformation, optimizing dialog, equivalences of logic programs, unification, and logic programming and parallel complexity. Topics include parallelism and structured and unstructured data, parallel algorithms and complexity, solving equations, most general unifiers, systems of equations and inequations, equivalences of logic programs, and optimizing recursive programs. The selection is a valuable source of data for researchers interested in pursuing further studies on the foundations of deductive databases and logic programming.

Author : Dino Pedreschi,Carlo Zaniolo
Publisher : Unknown
Page : 516 pages
File Size : 40,6 Mb
Release : 2014-01-15
Category : Electronic
ISBN : 3662182270

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Logic in Databases by Dino Pedreschi,Carlo Zaniolo Pdf

Author : Burkhard Freitag
Publisher : Springer Science & Business Media
Page : 412 pages
File Size : 41,7 Mb
Release : 1998-10-28
Category : Computers
ISBN : 3540653058

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Transactions and Change in Logic Databases by Burkhard Freitag Pdf

This book constitutes the thoroughly refereed and revised post-workshop proceedings of two international meetings devoted to deductive databases and logic programming. The technical papers presenting original research results were carefully reviewed and selected for inclusion in the present book, together with several survey articles summarizing the state of the art in the area. Thus, the book is the ultimate reference for anybody interested in the theory and application of deductive databases and logic programming.

Author : Jack Minker
Publisher : Morgan Kaufmann
Page : 753 pages
File Size : 41,9 Mb
Release : 2014-05-12
Category : Computers
ISBN : 9781483221120

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Foundations of Deductive Databases and Logic Programming by Jack Minker Pdf

Foundations of Deductive Databases and Logic Programming focuses on the foundational issues concerning deductive databases and logic programming. The selection first elaborates on negation in logic programming and towards a theory of declarative knowledge. Discussions focus on model theory of stratified programs, fixed point theory of nonmonotonic operators, stratified programs, semantics for negation in terms of special classes of models, relation between closed world assumption and the completed database, negation as a failure, and closed world assumption. The book then takes a look at negation as failure using tight derivations for general logic programs, declarative semantics of logic programs with negation, and declarative semantics of deductive databases and logic programs. The publication tackles converting AND-control to OR-control by program transformation, optimizing dialog, equivalences of logic programs, unification, and logic programming and parallel complexity. Topics include parallelism and structured and unstructured data, parallel algorithms and complexity, solving equations, most general unifiers, systems of equations and inequations, equivalences of logic programs, and optimizing recursive programs. The selection is a valuable source of data for researchers interested in pursuing further studies on the foundations of deductive databases and logic programming.

Author : Carlo Zaniolo
Publisher : Unknown
Page : 112 pages
File Size : 50,6 Mb
Release : 1988
Category : Horn clauses
ISBN : OCLC:21191983

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Logic and Databases by Carlo Zaniolo Pdf

Author : E. J. Yannakoudakis
Publisher : Springer
Page : 340 pages
File Size : 44,9 Mb
Release : 1988
Category : Computers
ISBN : UOM:39015013069730

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The Architectural Logic of Database Systems by E. J. Yannakoudakis Pdf

This book describes and classifies all database languages and design methodologies, including normalization and canonical synthesis, and presents a complete glossary of the terminology of the subject. The languages discussed include DDL, DSDL, DML, IRDS, QBE, natural language and ISO standard languages RDL and NDL, which will provide a yardstick for comparative assessment for some years to come. This volume contains many examples, and avoids long introductions to various concepts. It is direct, factual, and describes "what it is", "how it works", and "how it can be applied". Written for those with an elementary knowledge of programming who require a general and up-to-date introduction to the logic behind a database, its architecture, and the various languages for defining, manipulating, and maintaining database records.