Aspect-Oriented Database Systems by Awais Rashid

By Awais Rashid

Recently, a brand new set of software program improvement thoughts has develop into to be had, jointly termed Aspect-Oriented software program improvement (AOSD). This goals to aid the modularization of systemic houses (also often called crosscutting matters) and their next composition with the opposite components of a method.

Rashid specializes in using Aspect-Oriented Programming (AOP) thoughts to modularize differently extensively scoped good points in database structures, resembling the evolution or the versioning version, to enhance their customizability, extensibility and maintainability. He exhibits how using AOP can rework the way in which we advance, use and keep database structures. He additionally discusses how database structures can aid AOP via supplying a way for the garage and retrieval of aspects.

"Aspect-Oriented Database platforms" indicates the potential synergy among AOP and database platforms, and is of specific curiosity to researchers, graduate scholars and software program builders in database platforms and applications.

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1 3. Crosscutting Concerns in Database Systems Crosscutting Concerns at DBMS Level Trade-offs between modularity and efficiency, and granularity of services and the number of interservice relationships result in DBMS designs which lack customisability. This section discusses the problems faced when trying to achieve a high degree of customisability at the DBMS level in monolithic, layered and component-based designs. These problems arise due to the crosscutting nature of customisable features. The structure of a monolithic DBMS is shown in Fig.

6. edu/research/demeterl). Similar to the discussion in Sect. 2, the discussion in this section has only focussed on the adaptive programming model and not specific language extensions in the Demeter tools. Let us consider an example of adaptive programming based on traversing graphs representing bus routes. Let us assume we wish to calculate the fare income for bus travel on various routes between Lancaster City Centre and Lancaster University. , each node in the graph representing a particular route.

Consequently, any change to the evolution model (whether carried out offline or dynamically) can have a large ripple effect on the schema manager. 1 Crosscutting Concerns at DBMS Level 45 terns do not distinguish between the schema evolution model and the schema implementation model. With the exception of the TSE system (Ra and Rundensteiner 1997), the schema evolution model is also used as the implementation model. This implies that customisation of the evolution model would invalidate the whole schema and, in fact, the whole database.

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