Time And Relational Theory

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Time and Relational Theory

Author : C.J. Date,Hugh Darwen,Nikos Lorentzos
Publisher : Morgan Kaufmann
Page : 560 pages
File Size : 43,9 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

SQL and Relational Theory

Author : C. Date
Publisher : "O'Reilly Media, Inc."
Page : 447 pages
File Size : 54,8 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.

Relational Theory for Computer Professionals

Author : C.J. Date
Publisher : "O'Reilly Media, Inc."
Page : 284 pages
File Size : 53,5 Mb
Release : 2013-05-21
Category : Computers
ISBN : 9781449369460

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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.

Relational Theory and the Practice of Psychotherapy

Author : Paul L. Wachtel
Publisher : Guilford Press
Page : 353 pages
File Size : 50,9 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.

Being Relational

Author : Jocelyn Downie,Jennifer J. Llewellyn
Publisher : UBC Press
Page : 354 pages
File Size : 40,6 Mb
Release : 2011-11-10
Category : Law
ISBN : 9780774821919

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Being Relational by Jocelyn Downie,Jennifer J. Llewellyn Pdf

In relational theory, the self is seen as fundamentally constituted in terms of its relations to others: it not only lives in relationship with and to others, but also owes its very existence to such relationships. Being Relational explores core moral and metaphysical concepts through a relational-theory lens and analyzes how such considerations might apply to more practical areas of concern in health law and policy. Innovative and self-reflexive, this groundbreaking collection will appeal to a broad range of thinkers, especially those who seek to understand the complex ways in which power is created and sustained relationally.

A Relational Theory of World Politics

Author : Yaqing Qin
Publisher : Unknown
Page : 415 pages
File Size : 46,7 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.

Database Design and Relational Theory

Author : C. J. Date
Publisher : "O'Reilly Media, Inc."
Page : 277 pages
File Size : 46,7 Mb
Release : 2012-04-17
Category : Computers
ISBN : 9781449328016

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Database Design and Relational Theory by C. J. Date Pdf

Because databases often stay in production for decades, careful design is critical to making the database serve the needs of your users over years, and to avoid subtle errors or performance problems. In this book, C.J. Date, a leading exponent of relational databases, lays out the principles of good database design.

Relational-Cultural Therapy

Author : Judith V. Jordan
Publisher : Theories of Psychotherapy Seri
Page : 0 pages
File Size : 45,8 Mb
Release : 2017-10-30
Category : Psychology
ISBN : 143382826X

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Relational-Cultural Therapy by Judith V. Jordan Pdf

Jordan explores the history, theory, and practice of relationship centered, culturally oriented psychotherapy. This new edition highlights new research on the effectiveness of RCT in a variety of real-world situations such as developing team-building exercises in workplaces, and providing a theoretical frame for an E.U.-sponsored conference on human trafficking.

Database Design and Relational Theory

Author : C. J. Date
Publisher : Apress
Page : 449 pages
File Size : 41,9 Mb
Release : 2019-12-12
Category : Computers
ISBN : 9781484255407

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Database Design and Relational Theory by C. J. Date Pdf

Create database designs that scale, meet business requirements, and inherently work toward keeping your data structured and usable in the face of changing business models and software systems. This book is about database design theory. Design theory is the scientific foundation for database design, just as the relational model is the scientific foundation for database technology in general. Databases lie at the heart of so much of what we do in the computing world that negative impacts of poor design can be extraordinarily widespread. This second edition includes greatly expanded coverage of exotic and little understood normal forms such as: essential tuple normal form (ETNF), redundancy free normal form (RFNF), superkey normal form (SKNF), sixth normal form (6NF), and domain key normal form (DKNF). Also included are new appendixes, including one that provides an in-depth look into the crucial notion of data consistency. Sequencing of topics has been improved, and many explanations and examples have been rewritten and clarified based upon the author’s teaching of the content in instructor-led courses. This book aims to be different from other books on design by bridging the gap between the theory of design and the practice of design. The book explains theory in a way that practitioners should be able to understand, and it explains why that theory is of considerable practical importance. Reading this book provides you with an important theoretical grounding on which to do the practical work of database design. Reading the book also helps you in going to and understanding the more academic texts as you build your base of knowledge and expertise. Anyone with a professional interest in database design can benefit from using this book as a stepping-stone toward a more rigorous design approach and more lasting database models. What You Will LearnUnderstand what design theory is and is notBe aware of the two different goals of normalizationKnow which normal forms are truly significant Apply design theory in practice Be familiar with techniques for dealing with redundancy Understand what consistency is and why it is crucially important Who This Book Is For Those having a professional interest in database design, including data and database administrators; educators and students specializing in database matters; information modelers and database designers; DBMS designers, implementers, and other database vendor personnel; and database consultants. The book is product independent.

Temporal Data & the Relational Model

Author : C.J. Date,Hugh Darwen,Nikos A. Lorentzos
Publisher : Morgan Kaufmann
Page : 449 pages
File Size : 44,8 Mb
Release : 2003
Category : Computers
ISBN : 9781558608559

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Temporal Data & the Relational Model by C.J. Date,Hugh Darwen,Nikos A. Lorentzos Pdf

A review of relational concepts -- An overview of Tutorial D -- Time and the database -- What is the problem? -- Intervals -- Operators on intervals -- The EXPAND and COLLAPSE operators -- The PACK and UNPACK operators -- Generalizing the relational operators -- Database design -- Integrity constraints 1 : candidate keys and related constraints -- Integrity constraints 2 : general constraints -- Database queries -- Database updates -- Stated times and logged times -- Point and interval types revisited.

View Updating and Relational Theory

Author : C.J. Date
Publisher : "O'Reilly Media, Inc."
Page : 260 pages
File Size : 51,6 Mb
Release : 2012-12-20
Category : Computers
ISBN : 9781449357801

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View Updating and Relational Theory by C.J. Date Pdf

Views are virtual tables. That means they should be updatable, just as "real" or base tables are. In fact, view updatability isn’t just desirable, it’s crucial, for practical reasons as well as theoretical ones. But view updating has always been a controversial topic. Ever since the relational model first appeared, there has been widespread skepticism as to whether (in general) view updating is even possible. In stark contrast to this conventional wisdom, this book shows how views, just like base tables, can always be updated (so long as the updates don’t violate any integrity constraints). More generally, it shows how updating always ought to work, regardless of whether the target is a base table or a view. The proposed scheme is 100% consistent with the relational model, but rather different from the way updating works in SQL products today. This book can: Help database products improve in the future Help with a "roll your own" implementation, absent such product improvements Make you aware of the crucial role of predicates and constraints Show you how relational products are really supposed to behave Anyone with a professional interest in the relational model, relational technology, or database systems in general can benefit from this book.

Managing Time in Relational Databases

Author : Tom Johnston,Randall Weis
Publisher : Morgan Kaufmann
Page : 512 pages
File Size : 49,6 Mb
Release : 2010-08-19
Category : Computers
ISBN : 0080963374

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Managing Time in Relational Databases by Tom Johnston,Randall Weis Pdf

Managing Time in Relational Databases: How to Design, Update and Query Temporal Data introduces basic concepts that will enable businesses to develop their own framework for managing temporal data. It discusses the management of uni-temporal and bi-temporal data in relational databases, so that they can be seamlessly accessed together with current data; the encapsulation of temporal data structures and processes; ways to implement temporal data management as an enterprise solution; and the internalization of pipeline datasets. The book is organized into three parts. Part 1 traces the history of temporal data management and presents a taxonomy of bi-temporal data management methods. Part 2 provides an introduction to Asserted Versioning, covering the origins of Asserted Versioning; core concepts of Asserted Versioning; the schema common to all asserted version tables, as well as the various diagrams and notations used in the rest of the book; and how the basic scenario works when the target of that activity is an asserted version table. Part 3 deals with designing, maintaining, and querying asserted version databases. It discusses the design of Asserted Versioning databases; temporal transactions; deferred assertions and other pipeline datasets; Allen relationships; and optimizing Asserted Versioning databases. Integrates an enterprise-wide viewpoint with a strong conceptual model of temporal data management allowing for realistic implementation of database application development. Provides a true practical guide to the different possible methods of time-oriented databases with techniques of using existing funtionality to solve real world problems within an enterprise data architecture environment. Written by IT professionals for IT professionals, this book employs a heavily example-driven approach which reinforces learning by showing the results of puting the techniques discussed into practice.

E. F. Codd and Relational Theory, Revised Edition

Author : C. J. Date
Publisher : Technics Publications
Page : 307 pages
File Size : 51,5 Mb
Release : 2024-05-20
Category : Computers
ISBN : 9781634629300

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E. F. Codd and Relational Theory, Revised Edition 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—a thorough overhaul and rewrite of an earlier book by the same name—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 database 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. Database theory and practice have evolved considerably since Codd first defined his relational model, back in 1969. This book draws on decades of experience to present the most up to date treatment of the material possible. Anyone with a professional interest in databases can benefit from the insights it contains. The book is product independent.

Relational Psychoanalysis and Temporality

Author : Neil J. Skolnick
Publisher : Routledge
Page : 404 pages
File Size : 47,6 Mb
Release : 2019-07-05
Category : Psychology
ISBN : 9781000103892

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Relational Psychoanalysis and Temporality by Neil J. Skolnick Pdf

Includes a foreword by Nancy McWilliams In Relational Psychoanalysis and Temporality, Neil J. Skolnick takes us on a journey that traces his personal evolution from a graduate student through to his career as a relational psychoanalyst. Skolnick uniquely shares his publications and presentations that span his professional career, weaving in issues around temporality and relational psychoanalysis. Accessible and deeply thought-provoking, this book explores the many ways our lives are pervaded and shaped by time, and how it infuses the problems that psychoanalysts work with in the consulting room. Skolnick begins each chapter with an introduction, contextualizing the papers in his own evolution as a relational analyst as well as in the broader evolution of the relational conceit in the psychoanalytic field. Following an incisive description of the realities and mysteries of time, he highlights how psychoanalysts have applied several temporal phenomena to the psychoanalytic process. The papers and presentations address an assortment of time-worn psychoanalytic issues as they have become redefined, reconfigured and re-contextualized by the application of a relational psychoanalytic perspective. It purports to chart the changes in the field and the author’s practice as, like many psychoanalysts, Skolnick explains his shifted perspective from classical to ego psychological, to relational psychoanalysis across the trajectory of his career. Finally, the author struggles to understand the contributions of time to the process of change in psychoanalytic thought and practice. This book also provides a fascinating guide to how our lives are contextualized in the invisibilities of time, illuminating the most frequent ways time influences psychoanalytic thinking and practice. Relational Psychoanalysis and Temporality will be of immense interest to psychoanalysts, psychoanalytic psychotherapists and therapists of all persuasions in their practice and training. It should also be of interest to philosophers, historians and scholars of psychoanalysis who have a general interest in studying the role of psychoanalysis in influencing contemporary trends of Western thought.

Law's Relations

Author : Jennifer Nedelsky
Publisher : OUP USA
Page : 559 pages
File Size : 42,8 Mb
Release : 2011-10-11
Category : Law
ISBN : 9780195147964

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Law's Relations by Jennifer Nedelsky Pdf

Jennifer Nedelsky claims that we must rethink our notion of autonomy, rejecting the usual vocabulary of control, boundaries and individual rights. If we understand that we are fundamentally in relation to others, she argues, we will recognize that we become autonomous with others.