Recently, a set of new software development techniques – termed Aspect-Oriented Software Development (AOSD) – has become available that aims to support modularisation of systemic properties (also referred to as crosscutting-concerns) and their subsequent composition with other parts of the system. Rashid focuses on the use of Aspect-Oriented Programming (AOP) techniques to modularise otherwise broadly scoped features in database systems like the transaction or the versioning model to improve their customisability, extensibility, and maintainability. His aim is to show how the use of AOP can transform the way we develop, use and maintain database systems. He also discusses how database systems can support AOP by providing means for storage and retrieval of aspects. Aspect-Oriented Databases Systems shows the possible synergy between AOSD and database systems and is of particular interest for researchers, graduate students and software developers in database systems and applications.

The LNCS Journal Transactions on Aspect-Oriented Software Development is devoted to all facets of aspect-oriented software development (AOSD) techniques in the context of all phases of the software life cycle, from requirements and design to implementation, maintenance and evolution. The focus of the journal is on approaches for systematic identification, modularization, representation and composition of crosscutting concerns, i.e., the aspects and evaluation of such approaches and their impact on improving quality attributes of software systems. This volume, the fourth in the Transactions on Aspect-Oriented Software Development series, presents 5 revised papers together with 2 guest editors' introductions. The papers, which focus on mapping of early aspects across the software lifecycle, and aspects and software evolution, have passed through a careful peer reviewing process, carried out by the journal's Editorial Board and expert referees.

"A refreshingly new approach toward improving use-case modeling by fortifying it with aspect orientation." --Ramnivas Laddad, author of AspectJ in Action "Since the 1980s, use cases have been a way to bring users into software design, but translating use cases into software has been an art, at best, because user goods often don''t respect code boundaries. Now that aspect-oriented programming (AOP) can express crosscutting concerns directly in code, the man who developed use cases has proposed step-by-step methods for recognizing crosscutting concerns in use cases and writing the code in separate modules. If these methods are at all fruitful in your design and development practice, they will make a big difference in software quality for developers and users alike. --Wes Isberg, AspectJ team member"This book not only provides ideas and examples of what aspect-oriented software development is but how it can be utilized in a real development project." --MichaelWard, ThoughtWorks, Inc."No system has ever been designed from scratch perfectly; every system is composed of features layered in top of features that accumulate over time. Conventional design techniques do not handle this well, and over time the integrity of most systems degrades as a result. For the first time, here is a set of techniques that facilitates composition of behavior that not only allows systems to be defined in terms of layered functionality but composition is at the very heart of the approach. This book is an important advance in modern methodology and is certain to influence the direction of software engineering in the next decade, just as Object-Oriented Software Engineering influenced the last." --Kurt Bittner, IBM Corporation"Use cases are an excellent means to capture system requirements and drive a user-centric view of system development and testing. This book offers a comprehensive guide on explicit use-case-driven development from early requirements modeling to design and implementation. It provides a simple yet rich set of guidelines to realize use-case models using aspect-oriented design and programming. It is a valuable resource to researchers and practitioners alike." --Dr. Awais Rashid, Lancaster University, U.K., and author of Aspect-Oriented Database Systems "AOSD is important technology that will help developers produce better systems. Unfortunately, it has not been obvious how to integrate AOSD across a project''s lifecycle. This book shatters that barrier, providing concrete examples on how to use AOSD from requirements analysis through testing." --Charles B. Haley, research fellow, The Open University, U.K. Aspect-oriented programming (AOP) is a revolutionary new way to think about software engineering. AOP was introduced to address crosscutting concerns such as security, logging, persistence, debugging, tracing, distribution, performance monitoring, and exception handling in a more effective manner. Unlike conventional development techniques, which scatter the implementation of each concern into multiple classes, aspect-oriented programming localizes them. Aspect-oriented software development (AOSD) uses this approach to create a better modularity for functional and nonfunctional requirements, platform specifics, and more, allowing you to build more understandable systems that are easier to configure and extend to meet the evolving needs of stakeholders. In this highly anticipated new book, Ivar Jacobson and Pan-Wei Ng demonstrate how to apply use cases--a mature and systematic approach to focusing on stakeholder concerns--and aspect-orientation in building robust and extensible systems. Throughout the book, the authors employ a single, real-world example of a hotel management information system to make the described theories and practices concrete and understandable. The authors show how to identify, design, implement, test, and refactor use-case modules, as well as extend them. They also demonstrate how to design use-case modules with the Unified Modeling Language (UML)--emphasizing enhancements made in UML 2.0--and how to achieve use-case modularity using aspect technologies, notably AspectJ. Key topics include Making the case for use cases and aspects Capturing and modeling concerns with use cases Keeping concerns separate with use-case modules Modeling use-cases slices and aspects using the newest extensions to the UML notation Applying use cases and aspects in projects Whatever your level of experience with aspect-oriented programming, Aspect-Oriented Software Development with Use Cases will teach you how to develop better software by embracing the paradigm shift to AOSD.

The six papers collected here, from the journal devoted to all facets of aspect-oriented software development (AOSD) techniques, includes three submitted through the regular channels and three that focus on the area of aspects, dependencies and interactions.

– Those who want to learn about AOM ?nd in this special issue a concise collection of descriptions of solid and mature AOM approaches. They only have to take the time to understand one case study in order to appreciate the sample models shown in all papers. – Those who want to apply AOM for a particular purpose and are looking for the most appropriate AOM technique can use the papers presented in this specialissue to identify the mostpromisingapproach(es).By identifying similarities between their problem and the case study they should be able to determine candidate AOM approaches easily. – Those working on their own AOM approach can readily identify approaches that were able to handle concerns that their own approach is not able to handle elegantly. This stimulates cross-fertilization between approaches and collaborative research. – Thoseengineering researchersthat areworkingon enhancing softwaredev- opment processes can use the example models presented in this special issue to understand the potential bene?ts of using AOM techniques at di?erent phases of the software development life-cycle.

The definitive reference on the emerging and dynamic field of Aspect - Oriented Software Development (AOSD).

This well-received book, now in its third edition, is a comprehensive presentation of the fundamentals of object-oriented database systems (OODBMS). It provides extensive coverage of the different approaches to object data management, including the three major approaches--semantic database systems approach, object-oriented programming language extension approach, and the relational extension approach--as well as the various types of architectures of object-oriented database systems. The book discusses all recent developments in this field, such as the emergence of Java as the dominant object-oriented programming language--resulting in upcoming OODBMS products such as Ozone--and the provision of object-oriented database features in object-relational database systems (ORDBMS) products such as Oracle 9i and DB2. The new edition provides an extensive discussion of PostgreSQL, a popular open source object-oriented database system which has emerged as a viable alternative to expensive commercial database systems such as Oracle. The book is extensively illustrated, which enables students to develop a firm grasp of the underlying concepts. The chapter-end exercises help in testing the students' comprehension of the fundamental principles. The book is primarily meant for students of IT-related programmes having courses in database systems. Computer professionals will also find the book immensely useful.