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Author: C.J. Date
Publisher: Morgan Kaufmann
ISBN: 0128006757
Category : Computers
Languages : en
Pages : 579
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Book Description
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
Author: C.J. Date
Publisher: Morgan Kaufmann
ISBN: 0128006757
Category : Computers
Languages : en
Pages : 579
Get Book Here
Book Description
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
Author: C. Date
Publisher: "O'Reilly Media, Inc."
ISBN: 1449316409
Category : Computers
Languages : en
Pages : 447
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Book Description
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.
Author: C.J. Date
Publisher: "O'Reilly Media, Inc."
ISBN: 1449369464
Category : Computers
Languages : en
Pages : 284
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Book Description
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.
Author: C.J. Date
Publisher: Morgan Kaufmann
ISBN: 1558608559
Category : Computers
Languages : en
Pages : 449
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Book Description
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.
Author: Paul L. Wachtel
Publisher: Guilford Press
ISBN: 1609180453
Category : Psychology
Languages : en
Pages : 353
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Book Description
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.
Author: Yaqing Qin
Publisher:
ISBN: 1107183146
Category : Philosophy
Languages : en
Pages : 415
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Book Description
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.
Author: Judith V. Jordan
Publisher: Theories of Psychotherapy Seri
ISBN: 9781433828263
Category : Psychology
Languages : en
Pages : 0
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Book Description
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.
Author: C. J. Date
Publisher: "O'Reilly Media, Inc."
ISBN: 1449328016
Category : Computers
Languages : en
Pages : 277
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Book Description
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.
Author: C. J. Date
Publisher: Technics Publications
ISBN: 1634629302
Category : Computers
Languages : en
Pages : 317
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Book Description
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.
Author: Neil J. Skolnick
Publisher: Routledge
ISBN: 1000103897
Category : Psychology
Languages : en
Pages : 356
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Book Description
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.
