Christopher J. Date Bücher

Vermeiden Sie Missverständnisse, die Probleme für Design, Programmierung und Nutzung von Datenbanksystemen mit sich bringen können. Ob Sie nun mit Oracle, DB2, SQL Server, MySQL oder PostgreSQL arbeiten: Das Fachwörterbuch Relationale Datenbanken - kurz & gut verhindert Verwirrungen um die genaue Bedeutung von Fachbegriffen (wie z. B. Attribut, 3NF, Eins-zu-Viele-Entsprechung, Prädikat, Wiederholungsgruppe oder Join-Abhängigkeit) und hilft Ihnen, den Erfolg Ihrer Datenbankprojekte sicherzustellen. Diese sorgfältig auf Klarheit, Genauigkeit und Vollständigkeit überprüfte Kurzreferenz erklärt mit vielen Beispielen mehr als 600 Begriffe zu Themen und Konzepten des relationalen Datenmodells. Dieses Wörterbuch ist insofern einmalig, als DBAs, Designer und Implementierer von DBMS, Anwendungsentwickler sowie Informatikdozenten und -studenten hier in einer einzigen, kompakten Quelle die genauen Definitionen nachschlagen können, die sie für ihre tägliche Arbeit benötigen. Nirgendwo sonst sind diese Informationen so einfach verfügbar. Wenn Sie relationale Datenbanken einsetzen, führt an dieser praktischen Taschenreferenz kein Weg vorbei.

This eighth edition offers a thorough introduction to database systems, covering foundational technology and future developments, along with insights into current trends in the field.

This text is intended for undergraduates on courses in database technology.

With a foreword and suggested exercises by Prof. J. R. Isaac.

The previous edition of this book established itself as the most complete and understandable treatment of the SQL standard generally available. Many changes have occurred in the SQL standards world since that edition was published, a major new component, the Call-Level Interface (SQL/CLI), was added in 1995. Another major new component, the Persistent Stored Modules feature (SQL/PSM), is nearing completion and is due to be added to the standard in late 1996 or early 1997. The original 1992 standard itself has been significantly changed and corrected through the publication of two extensive Technical Corrigenda, one in 1994 and one in 1996.All of these changes are reflected in this Fourth Edition. Earlier editions of this book established a tradition of careful, clear, and accurate explanation of complex technical material. This new edition continues that tradition.

The foundational concepts for the next generation of business logic servers based on predicate logic are laid out, promising to revolutionize application development. A new technology known as business rules is set to dramatically change how we build computer applications. This approach allows for declarative application development, enabling developers to state WHAT needs to be done rather than HOW to do it. The benefits include ease and speed of initial development, simplified maintenance, platform independence, increased productivity, and enhanced business adaptability. This concise introduction is designed for both managers and technical professionals, divided into two parts. The first part provides a broad overview of business rules, while the second revisits these ideas within the context of relational technology. Key topics include presentation rules, database and application rules, building on the data model, potential advantages and disadvantages, and a fresh perspective on relational fundamentals. Overall, this resource offers a solid grounding in a transformative technology that is poised to reshape business practices in the IT sector.

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, CJ Date, a leading exponent of relational databases, lays out the principles of good database design.

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. Most books try to use SQL as a vehicle for teaching relational theory, but this book deliberately takes the opposite approach.