Dependencies in Relational Databases PDF Download
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Author: Bernhard Thalheim
Publisher: Vieweg+teubner Verlag
ISBN:
Category : Computers
Languages : en
Pages : 224
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Book Description
Author: Bernhard Thalheim
Publisher: Vieweg+teubner Verlag
ISBN:
Category : Computers
Languages : en
Pages : 224
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Book Description
Author: Sergio Greco
Publisher: Springer Nature
ISBN: 3031018931
Category : Computers
Languages : en
Pages : 111
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Book Description
The chase has long been used as a central tool to analyze dependencies and their effect on queries. It has been applied to different relevant problems in database theory such as query optimization, query containment and equivalence, dependency implication, and database schema design. Recent years have seen a renewed interest in the chase as an important tool in several database applications, such as data exchange and integration, query answering in incomplete data, and many others. It is well known that the chase algorithm might be non-terminating and thus, in order for it to find practical applicability, it is crucial to identify cases where its termination is guaranteed. Another important aspect to consider when dealing with the chase is that it can introduce null values into the database, thereby leading to incomplete data. Thus, in several scenarios where the chase is used the problem of dealing with data dependencies and incomplete data arises. This book discusses fundamental issues concerning data dependencies and incomplete data with a particular focus on the chase and its applications in different database areas. We report recent results about the crucial issue of identifying conditions that guarantee the chase termination. Different database applications where the chase is a central tool are discussed with particular attention devoted to query answering in the presence of data dependencies and database schema design. Table of Contents: Introduction / Relational Databases / Incomplete Databases / The Chase Algorithm / Chase Termination / Data Dependencies and Normal Forms / Universal Repairs / Chase and Database Applications
Author: S. K. Singh
Publisher: Pearson Education India
ISBN: 9788131760925
Category : Database design
Languages : en
Pages : 954
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Book Description
The second edition of this bestselling title is a perfect blend of theoretical knowledge and practical application. It progresses gradually from basic to advance concepts in database management systems, with numerous solved exercises to make learning easier and interesting. New to this edition are discussions on more commercial database management systems.
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:
Publisher: Springer-Verlag
ISBN: 366312018X
Category : Technology & Engineering
Languages : de
Pages : 223
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Book Description
Author: Wilfried Lemahieu
Publisher: Cambridge University Press
ISBN: 1107186129
Category : Computers
Languages : en
Pages : 817
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Book Description
Introductory, theory-practice balanced text teaching the fundamentals of databases to advanced undergraduates or graduate students in information systems or computer science.
Author: Rosanna Keefe
Publisher: Cambridge University Press
ISBN: 0521650674
Category : Language Arts & Disciplines
Languages : en
Pages : 249
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Book Description
A powerful comparative study of the main theories of vagueness, first published in 2000.
Author: Mark Levene
Publisher: Springer Science & Business Media
ISBN: 0857293494
Category : Computers
Languages : en
Pages : 632
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Book Description
Addressing important extensions of the relational database model, including deductive, temporal, and object-oriented databases, this book provides an overview of database modeling with the Entity-Relationship (ER) model and the relational model. The book focuses on the primary achievements in relational database theory, including query languages, integrity constraints, database design, computable queries, and concurrency control. This reference will shed light on the ideas underlying relational database systems and the problems that confront database designers and researchers.
Author: Suad Alagic
Publisher: Springer Science & Business Media
ISBN: 1461249228
Category : Computers
Languages : en
Pages : 270
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Book Description
This book presents a unified collection of concepts, tools, and techniques that constitute the most important technology available today for the design and implementation of information systems. The framework adopted for this integration goal is the one offered by the relational model of data, its applica tions, and implementations in multiuser and distributed environments. The topics presented in the book include conceptual modeling of application environments using the relational model, formal properties of that model, and tools such as relational languages which go with it, techniques for the logical and physical design of relational database systems and their imple mentations. The book attempts to develop an integrated methodology for addressing all these issues on the basis of the relational approach and various research and practical developments related to that approach. This book is the only one available today that presents such an inte gration. The diversity of approaches to data models, to logical and physical database design, to database application programming, and to use and imple mentation of database systems calls for a common framework for all of them. It has become difficult to study modern database technology with out such a unified approach to a diversity of results developed during the vigorous growth of the database area in recent years, let alone to teach a course on the subject.
Author: D A Bell
Publisher: Elsevier
ISBN: 148315291X
Category : Computers
Languages : en
Pages : 481
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Book Description
Relational Databases explores the major advances in relational databases and provides a balanced analysis of the state of the art in relational databases. Topics covered include capture and analysis of data placement requirements; distributed relational database systems; data dependency manipulation in database schemata; and relational database support for computer graphics and computer aided design. This book is divided into three sections and begins with an overview of the theory and practice of distributed systems, using the example of INGRES from Relational Technology as illustration. The following chapters focus on whether relational and relational-like systems actually meet business needs; IBM's Structured Query Language/Data System (SQL/DS); tools for database design and programming; and Secondary Access Methods and the problem of secondary index selection. A number of quantitative models for assessing the performance of physical databases are also described. This text concludes by assessing some of the most conspicuous trends in relational database research and development. This monograph will be of interest to database designers.
