Logic And Relational Theory

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Logic and Relational Theory

Author : C. J. Date
Publisher : Technics Publications
Page : 336 pages
File Size : 42,9 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.

Logic and Databases

Author : C. J. Date
Publisher : Trafford Publishing
Page : 461 pages
File Size : 40,9 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.

SQL and Relational Theory

Author : C. Date
Publisher : "O'Reilly Media, Inc."
Page : 447 pages
File Size : 46,8 Mb
Release : 2011-12-16
Category : Computers
ISBN : 9781449316402

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SQL and Relational Theory by C. Date Pdf

SQL is full of difficulties and traps for the unwary. You can avoid them if you understand relational theory, but only if you know how to put the theory into practice. In this insightful book, author C.J. Date explains relational theory in depth, and demonstrates through numerous examples and exercises how you can apply it directly to your use of SQL. This second edition includes new material on recursive queries, “missing information” without nulls, new update operators, and topics such as aggregate operators, grouping and ungrouping, and view updating. If you have a modest-to-advanced background in SQL, you’ll learn how to deal with a host of common SQL dilemmas. Why is proper column naming so important? Nulls in your database are causing you to get wrong answers. Why? What can you do about it? Is it possible to write an SQL query to find employees who have never been in the same department for more than six months at a time? SQL supports “quantified comparisons,” but they’re better avoided. Why? How do you avoid them? Constraints are crucially important, but most SQL products don’t support them properly. What can you do to resolve this situation? Database theory and practice have evolved since the relational model was developed more than 40 years ago. SQL and Relational Theory draws on decades of research to present the most up-to-date treatment of SQL available. C.J. Date has a stature that is unique within the database industry. A prolific writer well known for the bestselling textbook An Introduction to Database Systems (Addison-Wesley), he has an exceptionally clear style when writing about complex principles and theory.

Logic and Relational Theory

Author : Chris Date
Publisher : Unknown
Page : 512 pages
File Size : 49,7 Mb
Release : 2020-05-19
Category : Computers
ISBN : 1634628756

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Logic and Relational Theory by Chris 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.

SQL and Relational Theory

Author : C.J. Date
Publisher : "O'Reilly Media, Inc."
Page : 447 pages
File Size : 51,5 Mb
Release : 2011-12-16
Category : Computers
ISBN : 9781449319748

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SQL and Relational Theory by C.J. Date Pdf

SQL is full of difficulties and traps for the unwary. You can avoid them if you understand relational theory, but only if you know how to put the theory into practice. In this insightful book, author C.J. Date explains relational theory in depth, and demonstrates through numerous examples and exercises how you can apply it directly to your use of SQL. This second edition includes new material on recursive queries, “missing information” without nulls, new update operators, and topics such as aggregate operators, grouping and ungrouping, and view updating. If you have a modest-to-advanced background in SQL, you’ll learn how to deal with a host of common SQL dilemmas. Why is proper column naming so important? Nulls in your database are causing you to get wrong answers. Why? What can you do about it? Is it possible to write an SQL query to find employees who have never been in the same department for more than six months at a time? SQL supports “quantified comparisons,” but they’re better avoided. Why? How do you avoid them? Constraints are crucially important, but most SQL products don’t support them properly. What can you do to resolve this situation? Database theory and practice have evolved since the relational model was developed more than 40 years ago. SQL and Relational Theory draws on decades of research to present the most up-to-date treatment of SQL available. C.J. Date has a stature that is unique within the database industry. A prolific writer well known for the bestselling textbook An Introduction to Database Systems (Addison-Wesley), he has an exceptionally clear style when writing about complex principles and theory.

A Relational Theory of World Politics

Author : Yaqing Qin
Publisher : Unknown
Page : 415 pages
File Size : 44,5 Mb
Release : 2018-04-05
Category : Political Science
ISBN : 9781107183148

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A Relational Theory of World Politics by Yaqing Qin Pdf

A reinterpretation of world politics drawing on Chinese cultural and philosophical traditions to argue for a focus on relations amongst actors, rather than on the actors individually.

Time and Relational Theory

Author : C.J. Date,Hugh Darwen,Nikos Lorentzos
Publisher : Morgan Kaufmann
Page : 579 pages
File Size : 53,5 Mb
Release : 2014-08-13
Category : Computers
ISBN : 9780128006757

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Time and Relational Theory by C.J. Date,Hugh Darwen,Nikos Lorentzos Pdf

Time and Relational Theory provides an in-depth description of temporal database systems, which provide special facilities for storing, querying, and updating historical and future data. Traditionally, database management systems provide little or no special support for temporal data at all. This situation is changing because: Cheap storage enables retention of large volumes of historical data in data warehouses Users are now faced with temporal data problems, and need solutions Temporal features have recently been incorporated into the SQL standard, and vendors have begun to add temporal support to their DBMS products Based on the groundbreaking text Temporal Data & the Relational Model (Morgan Kaufmann, 2002) and new research led by the authors, Time and Relational Theory is the only book to offer a complete overview of the functionality of a temporal DBMS. Expert authors Nikos Lorentzos, Hugh Darwen, and Chris Date describe an approach to temporal database management that is firmly rooted in classical relational theory and will stand the test of time. This book covers the SQL:2011 temporal extensions in depth and identifies and discusses the temporal functionality still missing from SQL. Understand how the relational model provides an ideal basis for taming the complexities of temporal databases Learn how to analyze and evaluate commercial temporal products with this timely and important information Be able to use sound principles in designing and using temporal databases Understand the temporal support recently added to SQL with coverage of the new SQL features in this unique, accurate, and authoritative reference Appreciate the benefits of a truly relational approach to the problem with this clear, user friendly presentation

Database in Depth

Author : C.J. Date
Publisher : "O'Reilly Media, Inc."
Page : 234 pages
File Size : 46,5 Mb
Release : 2005-05-05
Category : Computers
ISBN : 9780596100124

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Database in Depth by C.J. Date Pdf

This concise guide sheds light on the principles behind the relational model, which underlies all database products in wide use today. It goes beyond the hype to give you a clear view of the technology -- a view that's not influenced by any vendor or product. Suitable for experienced database developers and designers.

Relational Theory for Computer Professionals

Author : C.J. Date
Publisher : "O'Reilly Media, Inc."
Page : 284 pages
File Size : 44,5 Mb
Release : 2013-05-21
Category : Computers
ISBN : 9781449369453

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Relational Theory for Computer Professionals by C.J. Date Pdf

All of today’s mainstream database products support the SQL language, and relational theory is what SQL is supposed to be based on. But are those products truly relational? Sadly, the answer is no. This book shows you what a real relational product would be like, and how and why it would be so much better than what’s currently available. With this unique book, you will: Learn how to see database systems as programming systems Get a careful, precise, and detailed definition of the relational model Explore a detailed analysis of SQL from a relational point of view There are literally hundreds of books on relational theory or the SQL language or both. But this one is different. First, nobody is more qualified than Chris Date to write such a book. He and Ted Codd, inventor of the relational model, were colleagues for many years, and Chris’s involvement with the technology goes back to the time of Codd’s first papers in 1969 and 1970. Second, most books try to use SQL as a vehicle for teaching relational theory, but this book deliberately takes the opposite approach. Its primary aim is to teach relational theory as such. Then it uses that theory as a vehicle for teaching SQL, showing in particular how that theory can help with the practical problem of using SQL correctly and productively. Any computer professional who wants to understand what relational systems are all about can benefit from this book. No prior knowledge of databases is assumed.

Ewa Orłowska on Relational Methods in Logic and Computer Science

Author : Joanna Golińska-Pilarek,Michał Zawidzki
Publisher : Springer
Page : 502 pages
File Size : 42,5 Mb
Release : 2018-12-08
Category : Philosophy
ISBN : 9783319978796

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Ewa Orłowska on Relational Methods in Logic and Computer Science by Joanna Golińska-Pilarek,Michał Zawidzki Pdf

This book is a tribute to Professor Ewa Orłowska, a Polish logician who was celebrating the 60th year of her scientific career in 2017. It offers a collection of contributed papers by different authors and covers the most important areas of her research. Prof. Orłowska made significant contributions to many fields of logic, such as proof theory, algebraic methods in logic and knowledge representation, and her work has been published in 3 monographs and over 100 articles in internationally acclaimed journals and conference proceedings. The book also includes Prof. Orłowska’s autobiography, bibliography and a trialogue between her and the editors of the volume, as well as contributors' biographical notes, and is suitable for scholars and students of logic who are interested in understanding more about Prof. Orłowska’s work.

Introduction to Logical Theory (Routledge Revivals)

Author : P. F. Strawson
Publisher : Taylor & Francis
Page : 279 pages
File Size : 41,7 Mb
Release : 2012-07-26
Category : Philosophy
ISBN : 9781136810688

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Introduction to Logical Theory (Routledge Revivals) by P. F. Strawson Pdf

First published in 1952, professor Strawson’s highly influential Introduction to Logical Theory provides a detailed examination of the relationship between the behaviour of words in common language and the behaviour of symbols in a logical system. He seeks to explain both the exact nature of the discipline known as Formal Logic, and also to reveal something of the intricate logical structure of ordinary unformalised discourse.

Relational Theory and the Practice of Psychotherapy

Author : Paul L. Wachtel
Publisher : Guilford Press
Page : 353 pages
File Size : 50,7 Mb
Release : 2010-10-19
Category : Psychology
ISBN : 9781609180454

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Relational Theory and the Practice of Psychotherapy by Paul L. Wachtel Pdf

This important and innovative book explores a new direction in psychoanalytic thought that can expand and deepen clinical practice. Relational psychoanalysis diverges in key ways from the assumptions and practices that have traditionally characterized psychoanalysis. At the same time, it preserves, and even extends, the profound understanding of human experience and psychological conflict that has always been the strength of the psychoanalytic approach. Through probing theoretical analysis and illuminating examples, the book offers new and powerful ways to revitalize clinical practice.

E. F. Codd and Relational Theory: A Detailed Review and Analysis of CoddÕs Major Database Writings

Author : C. J. Date
Publisher : Lulu.com
Page : 306 pages
File Size : 47,8 Mb
Release : 2019-07-18
Category : Database management
ISBN : 9781684705276

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E. F. Codd and Relational Theory: A Detailed Review and Analysis of CoddÕs Major Database Writings by C. J. Date Pdf

E. F. Codd's relational model of data has been described as one of the three greatest inventions of all time (the other two being agriculture and the scientific method), and his receipt of the 1981 ACM Turing Award?the top award in computer science?for inventing it was thoroughly deserved. The papers in which Codd first described his model were staggering in their originality; they had, and continue to have, a huge impact on just about every aspect of the way we do business in the world today. And yet few people, even in the professional database community, are truly familiar with those papers. This book is an attempt to remedy this sorry state of affairs. In it, well known author C. J. Date provides a detailed examination of all of Codd's major technical publications, explaining the nature of his contribution in depth, and in particular highlighting not only the many things he got right but also some of the things he got wrong.

Theory and Applications of Relational Structures as Knowledge Instruments

Author : Harrie de Swart,Ewa Orlowska,Gunther Schmidt,Marc Roubens
Publisher : Springer
Page : 280 pages
File Size : 55,7 Mb
Release : 2004-01-30
Category : Computers
ISBN : 9783540246152

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Theory and Applications of Relational Structures as Knowledge Instruments by Harrie de Swart,Ewa Orlowska,Gunther Schmidt,Marc Roubens Pdf

Relational structures abound in our daily environment: relational databases, data mining, scaling procedures, preference relations, etc. As the documentation of scientific results achieved within the European COST Action 274, TARSKI, this book advances the understanding of relational structures and the use of relational methods in various application fields. The 12 revised full papers were carefully reviewed and selected for presentations. The papers are devoted to mechanization of relational reasoning, relational scaling and preferences, and algebraic and logical foundations of real world relations.

The Guanxi of Relational International Theory

Author : Emilian Kavalski
Publisher : Routledge
Page : 130 pages
File Size : 45,9 Mb
Release : 2017-10-03
Category : Political Science
ISBN : 9781351613712

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The Guanxi of Relational International Theory by Emilian Kavalski Pdf

This book offers a relational theory of International Relations (IR). To show the ways in which the relationality is foreshadowed in IR conversations it makes the following three points: 1) it recovers a mode of IR theorizing as itinerant translation; 2) it deploys the concept and practices of guanxi (employed here as a heuristic device revealing the infinite capacity of international interactions to create and construct multiple worlds) to uncover the outlines of a relational IR theorizing; and 3) it demonstrates that relational theorizing is at the core of projects for worlding IR. By engaging with the phenomenon of relationality, Emilian Kavalski invokes the complexity of possible worlds and demonstrates new possibilities for powerful ethical-political innovations in IR theorizing. Thus, relational IR theorizing emerges as an optic which both acknowledges the agency of ‘others’ in the context of myriad interpretative intersections of people, powers, and environments (as well as their complex histories, cultures, and agency) and stimulates awareness of the dynamically-intertwined contingencies through which meanings are generated contingently through interactions in communities of practice. The book will have a strong appeal to the broad academic readership in Asian Studies, Political Science, Comparative Politics, International Relations theory and students and scholars of non-/post-Western International Relations and non-/post-Western Political Thought.