Time and Relational Theory

Time and Relational Theory
Author: C. J. Date,Nikos Lorentzos,Hugh Darwen
Publsiher: Morgan Kaufmann
Total Pages: 560
Release: 2014-07-16
ISBN 10: 9780128006313
ISBN 13: 0128006315
Language: EN, FR, DE, ES & NL

Time and Relational Theory Book Review:

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
Author: C.J. Date,Hugh Darwen,Nikos Lorentzos
Publsiher: Morgan Kaufmann
Total Pages: 560
Release: 2014-08-13
ISBN 10: 0128006757
ISBN 13: 9780128006757
Language: EN, FR, DE, ES & NL

Time and Relational Theory Book Review:

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
Author: C. J. Date
Publsiher: Unknown
Total Pages: 329
Release: 2015
ISBN 10: 9781491917763
ISBN 13: 1491917768
Language: EN, FR, DE, ES & NL

Time and Relational Theory Book Review:

"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.

SQL and Relational Theory

SQL and Relational Theory
Author: C. Date
Publsiher: "O'Reilly Media, Inc."
Total Pages: 428
Release: 2011-12-16
ISBN 10: 1449316409
ISBN 13: 9781449316402
Language: EN, FR, DE, ES & NL

SQL and Relational Theory Book Review:

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.

Database Design and Relational Theory

Database Design and Relational Theory
Author: Chris Date
Publsiher: "O'Reilly Media, Inc."
Total Pages: 260
Release: 2012-04-17
ISBN 10: 1449328016
ISBN 13: 9781449328016
Language: EN, FR, DE, ES & NL

Database Design and Relational Theory Book Review:

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 Theory for Computer Professionals

Relational Theory for Computer Professionals
Author: C.J. Date
Publsiher: "O'Reilly Media, Inc."
Total Pages: 284
Release: 2013-05-21
ISBN 10: 1449369464
ISBN 13: 9781449369460
Language: EN, FR, DE, ES & NL

Relational Theory for Computer Professionals Book Review:

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.

Logic and Relational Theory

Logic and Relational Theory
Author: C. J. Date
Publsiher: Technics Publications
Total Pages: 512
Release: 2020-06-06
ISBN 10: 1634628772
ISBN 13: 9781634628778
Language: EN, FR, DE, ES & NL

Logic and Relational Theory Book Review:

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.

Temporal Data and Relational Theory

Temporal Data and Relational Theory
Author: C. J Date
Publsiher: Unknown
Total Pages: 329
Release: 2013
ISBN 10:
ISBN 13: OCLC:1137170943
Language: EN, FR, DE, ES & NL

Temporal Data and Relational Theory Book Review:

"The plummeting cost of storage and the widespread adoption of data warehouse technology have led to an increasing interest in temporal databases. As a consequence, the ability to deal properly with the time dimension in databases has become an increasingly important practical problem. This video seminar describes and explains the theoretical ideal behind temporal databases in depth, and why it's 100% consistent with the classical relational model."--Resource description page.

View Updating and Relational Theory

View Updating and Relational Theory
Author: Chris Date
Publsiher: "O'Reilly Media, Inc."
Total Pages: 240
Release: 2013
ISBN 10: 1449357849
ISBN 13: 9781449357849
Language: EN, FR, DE, ES & NL

View Updating and Relational Theory Book Review:

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.

Type Inheritance and Relational Theory

Type Inheritance and Relational Theory
Author: C.J. Date
Publsiher: "O'Reilly Media, Inc."
Total Pages: 572
Release: 2016-09-08
ISBN 10: 1491959940
ISBN 13: 9781491959947
Language: EN, FR, DE, ES & NL

Type Inheritance and Relational Theory Book Review:

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
Author: C. J. Date
Publsiher: Lulu.com
Total Pages: 304
Release: 2019-07-18
ISBN 10: 1684705274
ISBN 13: 9781684705276
Language: EN, FR, DE, ES & NL

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

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.

Temporal Data and the Relational Model

Temporal Data and the Relational Model
Author: C. J. Date,Hugh Darwen,Nikos A. Lorentzos
Publsiher: Morgan Kaufmann
Total Pages: 422
Release: 2003
ISBN 10: 1558608559
ISBN 13: 9781558608559
Language: EN, FR, DE, ES & NL

Temporal Data and the Relational Model Book Review:

Temporal database systems are systems that provide special support for storing, querying, and updating historical and/or future data. Current DBMSs provide essentially no temporal features at all, but this situation is likely to change soon for a variety of reasons; in fact, temporal databases are virtually certain to become important sooner rather than later, in the commercial world as well as in academia. This book provides an in-depth description of the foundations and principles on which those temporal DBMSs will be built. These foundations and principles are firmly rooted in the relational model of data; thus, they represent an evolutionary step, not a revolutionary one, and they will stand the test of time. This book is arranged in three parts and a set of appendixes: * Preliminaries: Provides a detailed review of the relational model, and an overview of the Tutorial D language. * Laying the Foundations: Explains basic temporal data problems and introduces fundamental constructs and operators for addressing those problems. * Building on the Foundations: Applies the material of the previous part to issues of temporal database design, temporal constraints, temporal query and update, and much more. * Appendixes: Include annotated references and bibliography, implementation considerations, and other topics. Key features: * Describes a truly relational approach to the temporal data problem. * Addresses implementation as well as model issues. * Covers recent research on new database design techniques, a new normal form, new relational operators, new update operators, a new approach to the problem of "granularity," support for "cyclic point types," and other matters. * Includes review questions and exercises in every chapter. * Suitable for both reference and tutorial purposes.

Relational Theory and the Practice of Psychotherapy

Relational Theory and the Practice of Psychotherapy
Author: Paul L. Wachtel
Publsiher: Guilford Press
Total Pages: 338
Release: 2010-10-19
ISBN 10: 1609180453
ISBN 13: 9781609180454
Language: EN, FR, DE, ES & NL

Relational Theory and the Practice of Psychotherapy Book Review:

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.

A Relational Theory of World Politics

A Relational Theory of World Politics
Author: Yaqing Qin
Publsiher: Unknown
Total Pages: 402
Release: 2018-04-05
ISBN 10: 1107183146
ISBN 13: 9781107183148
Language: EN, FR, DE, ES & NL

A Relational Theory of World Politics Book Review:

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

Database Design and Relational Theory
Author: C.J. Date
Publsiher: "O'Reilly Media, Inc."
Total Pages: 278
Release: 2012-04-17
ISBN 10: 1449330207
ISBN 13: 9781449330200
Language: EN, FR, DE, ES & NL

Database Design and Relational Theory Book Review:

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.

Physical Time

Physical Time
Author: Mario Augusto Bunge
Publsiher: Unknown
Total Pages: 34
Release: 1970
ISBN 10:
ISBN 13: OCLC:220807773
Language: EN, FR, DE, ES & NL

Physical Time Book Review:

Database in Depth

Database in Depth
Author: C. Date
Publsiher: "O'Reilly Media, Inc."
Total Pages: 208
Release: 2005-05-05
ISBN 10: 0596100124
ISBN 13: 9780596100124
Language: EN, FR, DE, ES & NL

Database in Depth Book Review:

This book sheds light on the principles behind the relational model, which is fundamental to all database-backed applications--and, consequently, most of the work that goes on in the computing world today. Database in Depth: The Relational Model for Practitioners goes beyond the hype and gets to the heart of how relational databases actually work. Ideal for experienced database developers and designers, this concise guide gives you a clear view of the technology--a view that's not influenced by any vendor or product. Featuring an extensive set of exercises, it will help you: understand why and how the relational model is still directly relevant to modern database technology (and will remain so for the foreseeable future) see why and how the SQL standard is seriously deficient use the best current theoretical knowledge in the design of their databases and database applications make informed decisions in their daily database professional activities Database in Depth will appeal not only to database developers and designers, but also to a diverse field of professionals and academics, including database administrators (DBAs), information modelers, database consultants, and more. Virtually everyone who deals with relational databases should have at least a passing understanding of the fundamentals of working with relational models. Author C.J. Date has been involved with the relational model from its earliest days. An exceptionally clear-thinking writer, Date lays out principle and theory in a manner that is easily understood. Few others can speak as authoritatively the topic of relational databases as Date can.

SQL and Relational Theory

SQL and Relational Theory
Author: C.J. Date
Publsiher: "O'Reilly Media, Inc."
Total Pages: 428
Release: 2009-01-23
ISBN 10: 9780596555429
ISBN 13: 0596555423
Language: EN, FR, DE, ES & NL

SQL and Relational Theory Book Review:

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.

E F Codd and Relational Theory Revised Edition

E  F  Codd and Relational Theory  Revised Edition
Author: C. J. Date
Publsiher: Technics Publications
Total Pages: 404
Release: 2021-05-25
ISBN 10: 1634629302
ISBN 13: 9781634629300
Language: EN, FR, DE, ES & NL

E F Codd and Relational Theory Revised Edition Book Review:

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.

Database Design and Relational Theory

Database Design and Relational Theory
Author: C. J. Date
Publsiher: Apress
Total Pages: 451
Release: 2019-12-12
ISBN 10: 1484255402
ISBN 13: 9781484255407
Language: EN, FR, DE, ES & NL

Database Design and Relational Theory Book Review:

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 Learn Understand what design theory is and is not Be aware of the two different goals of normalization Know 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.