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Time and Relational Theory

Time and Relational Theory
Temporal Databases in the Relational Model and SQL

by C.J. Date,Hugh Darwen,Nikos Lorentzos

  • Publisher : Morgan Kaufmann
  • Release : 2014-08-13
  • Pages : 560
  • ISBN : 0128006757
  • Language : En, Es, Fr & De
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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

Time and Relational Theory

Time and Relational Theory
Temporal Databases in the Relational Model and SQL : a Chris Date Master Class

by C. J. Date

  • Publisher : Unknown Publisher
  • Release : 2015
  • Pages : 329
  • ISBN : 9781491917763
  • Language : En, Es, Fr & De
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"This Master Class video describes and explains that theoretical ideal- which, interestingly, is 100 percent consistent with the classical relational model-in depth. It also discusses, in depth, the new temporal support to be found in the SQL standard. This video includes five major parts: A review of relational concepts, laying the foundations, building on the foundations, and SQL support."--Resource description page.

World Enough and Space-Time

World Enough and Space-Time
Absolute Vs. Relational Theories of Space and Time

by John Earman

  • Publisher : Bradford Books
  • Release : 1992-03-01
  • Pages : 250
  • ISBN : 9780262550215
  • Language : En, Es, Fr & De
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Newton's Principia introduced conceptions of space and time that launched one of themost famous and sustained debates in the history of physics, a controversy that involves fundamentalconcerns in the foundations of physics, metaphysics, and scientific epistemology.This bookintroduces and clarifies the historical and philosophical development of the clash between Newton'sabsolute conception of space and Leibniz's relational one. It separates the issues and provides newperspectives on absolute relational accounts of motion and relational-substantival accounts of theontology of space time.Earman's sustained treatment and imaginative insights raise to a new levelthe debate on these important issues at the boundary of philosophy and physics. He surveys thehistory of the controversy from Newton to Einstein develops the mathematics and physics needed topose the issues in sharp form and provides a persuasive assessment of the philosophical problemsinvolved.Most importantly, Earman revitalizes the connection of the debate to contemporary science.He shows, for example, how concerns raised by Leibniz form the core of ongoing debate on thefoundations of general theory of relativity, moving the discussion into a new and vital arena andintroducing arguments that will be discussed for years to come.John Earman is Professor of Historyand Philosophy of Science at the University of Pittsburgh. A Bradford Book

SQL and Relational Theory

SQL and Relational Theory
How to Write Accurate SQL Code

by C.J. Date

  • Publisher : "O'Reilly Media, Inc."
  • Release : 2009-01-23
  • Pages : 428
  • ISBN : 9780596555429
  • Language : En, Es, Fr & De
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Understanding SQL's underlying theory is the best way to guarantee that your SQL code is correct and your database schema is robust and maintainable. On the other hand, if you're not well versed in the theory, you can fall into several traps. In SQL and Relational Theory, author C.J. Date demonstrates how you can apply relational theory directly to your use of SQL. With numerous examples and clear explanations of the reasoning behind them, you'll learn how to deal with common SQL dilemmas, such as: Should database access granted be through views instead of base tables? Nulls in your database are causing you to get wrong answers. Why? What can you do about it? Could you 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 Edgar Codd originally defined the relational model back in 1969. Independent of any SQL products, SQL and Relational Theory draws on decades of research to present the most up-to-date treatment of the material available anywhere. Anyone with a modest to advanced background in SQL will benefit from the many insights in this book.

Database Design and Relational Theory

Database Design and Relational Theory
Normal Forms and All That Jazz

by C.J. Date

  • Publisher : "O'Reilly Media, Inc."
  • Release : 2012-04-17
  • Pages : 278
  • ISBN : 1449330207
  • Language : En, Es, Fr & De
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What makes this book different from others on database design? Many resources on design practice do little to explain the underlying theory, and books on design theory are aimed primarily at theoreticians. In this book, renowned expert Chris Date bridges the gap by introducing design theory in ways practitioners can understand—drawing on lessons learned over four decades of experience to demonstrate why proper database design is so critical in the first place. Every chapter includes a set of exercises that show how to apply the theoretical ideas in practice, provide additional information, or ask you to prove some simple theoretical result. If you’re a database professional familiar with the relational model, and have more than a passing interest in database design, this book is for you. Questions this book answers include: Why is Heath’s Theorem so important? What is The Principle of Orthogonal Design? What makes some JDs reducible and others irreducible? Why does dependency preservation matter? Should data redundancy always be avoided? Can it be? Databases often stay in production for decades, and careful design is critical for avoiding subtle errors and processing problems over time. If they’re badly designed, the negative impacts can be incredibly widespread. This gentle introduction shows you how to use important theoretical results to create good database designs.

Type Inheritance and Relational Theory

Type Inheritance and Relational Theory
Subtypes, Supertypes, and Substitutability

by C.J. Date

  • Publisher : "O'Reilly Media, Inc."
  • Release : 2016-09-08
  • Pages : 572
  • ISBN : 1491959940
  • Language : En, Es, Fr & De
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Type inheritance is that phenomenon according to which we can say, for example, that every square is also a rectangle, and so properties that apply to rectangles in general apply to squares in particular. In other words, squares are a subtype of rectangles, and rectangles are a supertype of squares. Recognizing and acting upon such subtype / supertype relationships provides numerous benefits: Certainly it can help in data modeling, and it can also provide for code reuse in applications. For these reasons, many languages, including the standard database language SQL, have long supported such relationships. However, there doesn’t seem to be any consensus in the community at large on a formal, rigorous, and abstract model of inheritance. This book proposes such a model, one that enjoys several advantages over other approaches, not the least of which it is that it’s fully compatible with the well known relational model of data. Topics the model covers include: Both single and multiple inheritance Scalar, tuple, and relation inheritance Type lattices and union and intersection types Polymorphism and substitutability Compile time and run time binding All of these topics are described in detail in the book, with numerous illustrative examples, exercises, and answers. The book also discusses several alternative approaches. In particular, it includes a detailed discussion and analysis of inheritance as supported in the SQL standard.

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

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

by C. J. Date

  • Publisher : Lulu Press, Inc
  • Release : 2019-11-01
  • Pages : 289
  • ISBN : 1684705282
  • Language : En, Es, Fr & De
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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.

SQL and Relational Theory

SQL and Relational Theory
How to Write Accurate SQL Code

by C. Date

  • Publisher : "O'Reilly Media, Inc."
  • Release : 2011-12-16
  • Pages : 428
  • ISBN : 1449316409
  • Language : En, Es, Fr & De
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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.

Cartesian Spacetime

Cartesian Spacetime
Descartes’ Physics and the Relational Theory of Space and Motion

by E. Slowik

  • Publisher : Springer Science & Business Media
  • Release : 2013-03-14
  • Pages : 252
  • ISBN : 9401709750
  • Language : En, Es, Fr & De
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Although Descartes' natural philosophy marked an advance in the development of modern science, many critics over the years, such as Newton, have rejected his particular `relational' theory of space and motion. Nevertheless, it is also true that most historians and philosophers have not sufficiently investigated the viability of the Cartesian theory. This book explores, consequently, the success of the arguments against Descartes' theory of space and motion by determining if it is possible to formulate a version that can eliminate its alleged problems. In essence, this book comprises the first sustained attempt to construct a consistent `Cartesian' spacetime theory: that is, a theory of space and time that consistently incorporates Descartes' various physical and metaphysical concepts. Intended for students in the history of philosophy and science, this study reveals the sophisticated insights, and often quite successful elements, in Descartes' unjustly neglected relational theory of space and motion.

Logic and Relational Theory

Logic and Relational Theory
A Book

by C. J. Date

  • Publisher : Technics Publications
  • Release : 2020-06-06
  • Pages : 512
  • ISBN : 1634628772
  • Language : En, Es, Fr & De
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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.

The Problem of Time

The Problem of Time
An Historical & Critical Study

by John Alexander Gunn

  • Publisher : London : G. Allen & Unwin
  • Release : 1929
  • Pages : 460
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Relational Theory and the Practice of Psychotherapy

Relational Theory and the Practice of Psychotherapy
A Book

by Paul L. Wachtel

  • Publisher : Guilford Press
  • Release : 2010-10-19
  • Pages : 338
  • ISBN : 1609180453
  • Language : En, Es, Fr & De
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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.

Time, Causality, and the Quantum Theory

Time, Causality, and the Quantum Theory
Studies in the Philosophy of Science Volume Two Time in a Quantized Universe

by S. Mehlberg

  • Publisher : Springer
  • Release : 1980-11-30
  • Pages : 294
  • ISBN : 9789027710758
  • Language : En, Es, Fr & De
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Bitemporal Data

Bitemporal Data
Theory and Practice

by Tom Johnston

  • Publisher : Newnes
  • Release : 2014-08-19
  • Pages : 400
  • ISBN : 0124080553
  • Language : En, Es, Fr & De
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Bitemporal data has always been important. But it was not until 2011 that the ISO released a SQL standard that supported it. Currently, among major DBMS vendors, Oracle, IBM and Teradata now provide at least some bitemporal functionality in their flagship products. But to use these products effectively, someone in your IT organization needs to know more than how to code bitemporal SQL statements. Perhaps, in your organization, that person is you. To correctly interpret business requests for temporal data, to correctly specify requirements to your IT development staff, and to correctly design bitemporal databases and applications, someone in your enterprise needs a deep understanding of both the theory and the practice of managing bitemporal data. Someone also needs to understand what the future may bring in the way of additional temporal functionality, so their enterprise can plan for it. Perhaps, in your organization, that person is you. This is the book that will show the do-it-yourself IT professional how to design and build bitemporal databases and how to write bitemporal transactions and queries, and will show those who will direct the use of vendor-provided bitemporal DBMSs exactly what is going on "under the covers" of that software. Explains the business value of bitemporal data in terms of the information that can be provided by bitemporal tables and not by any other form of temporal data, including history tables, version tables, snapshot tables, or slowly-changing dimensions. Provides an integrated account of the mathematics, logic, ontology and semantics of relational theory and relational databases, in terms of which current relational theory and practice can be seen as unnecessarily constrained to the management of nontemporal and incompletely temporal data. Explains how bitemporal tables can provide the time-variance and nonvolatility hitherto lacking in Inmon historical data warehouses. Explains how bitemporal dimensions can replace slowly-changing dimensions in Kimball star schemas, and why they should do so. Describes several extensions to the current theory and practice of bitemporal data, including the use of episodes, "whenever" temporal transactions and queries, and future transaction time. Points out a basic error in the ISO’s bitemporal SQL standard, and warns practitioners against the use of that faulty functionality. Recommends six extensions to the ISO standard which will increase the business value of bitemporal data. Points towards a tritemporal future for bitemporal data, in which an Aristotelian ontology and a speech-act semantics support the direct management of the statements inscribed in the rows of relational tables, and add the ability to track the provenance of database content to existing bitemporal databases. This book also provides the background needed to become a business ontologist, and explains why an IT data management person, deeply familiar with corporate databases, is best suited to play that role. Perhaps, in your organization, that person is you.

Relational Frame Theory

Relational Frame Theory
A Post-Skinnerian Account of Human Language and Cognition

by Steven C. Hayes,Dermot Barnes-Holmes,Bryan Roche

  • Publisher : Springer Science & Business Media
  • Release : 2007-05-08
  • Pages : 284
  • ISBN : 030647638X
  • Language : En, Es, Fr & De
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This volume goes beyond theory and gives the empirical and conceptual tools to conduct an experimental analysis of virtually every substantive topic in human language and cognition, both basic and applied. It challenges behavioral psychology to abandon many of the specific theoretical formulations of its most prominent historical leader in the domain of complex human behavior, especially in human language and cognition, and approach the field from a new direction. It will be of interest to behavior theorists, cognitive psychologists, therapists, and educators.

Supplementary Volume

Supplementary Volume
A Book

by Aristotelian Society (Great Britain)

  • Publisher : Unknown Publisher
  • Release : 1975
  • Pages : 247
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Kant's Theory of Time

Kant's Theory of Time
A Book

by Sadik J. al-Azm,Ṣādiq Jalāl ʻAẓm

  • Publisher : Unknown Publisher
  • Release : 1967
  • Pages : 84
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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The Encyclopedia of Philosophy

The Encyclopedia of Philosophy
A Book

by Paul Edwards

  • Publisher : Unknown Publisher
  • Release : 1972
  • Pages : 329
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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Treats eastern & western philosophy; it deals with ancient, medieval and modern philosophy; and it discusses the theories of mathematicians, physicist, biologist, sociologists, psychologists, moral reformers and religious thinkers where these have had an impact on philosophy.

Relational Theory

Relational Theory
Concepts and Application

by Ken S. Brathwaite

  • Publisher : Unknown Publisher
  • Release : 1991
  • Pages : 261
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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A guide and reference about the relational database environment which covers data models and structures, logical and physical database design, data normalization and control and infrastructure support of the database environment. CASE tools, DB2, QMF and ORACLE are described.

Contemporary Concepts of Time and the Idea of God

Contemporary Concepts of Time and the Idea of God
A Book

by E. A. Ramige

  • Publisher : Unknown Publisher
  • Release : 1935
  • Pages : 132
  • ISBN : 9876543210XXX
  • Language : En, Es, Fr & De
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