Model Management für Schema - Evolution
نویسنده
چکیده
منابع مشابه
Axiomatization of Dynamic Schema Evolution in Objectbases
The schema of a system consists of the constructs that model its entities. Schema evolution is the timely change and management of the schema. Dynamic schema evolution is the management of schema changes while the system is in operation. We propose a sound and complete axiomatic model for dynamic schema evolution in objectbase management systems (OBMSs) that support subtyping and property inher...
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Dynamic schema evolution is the ability of the database schema to evolve by incorporating changes to its structure without loss of existing data and without significantly affecting the dayto-day operations of the database. A very large body of literature exists today reflecting the extensive work addressing schema evolution and its management. Schema evolution has three well-defined and inter-r...
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The increasing importance of better customisation of industrial products has led to development of configurable products. They allow companies to provide product families with a large number, typically millions of variants. Description and management of a large product variety within a single data model is challenging and requires a solid conceptual basis. This management differs from the schem...
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This paper presents a version model which handles database schema changes and which takes evolution into account. Its originality is in allowing the development of partial schema versions, or views of a schema. These versions are created in the same database from a common schema. We define the set of authorised modifications on a schema and the rules which guarantee its coherence after transfor...
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Model management is a new approach to meta data management that offers a higher level programming interface than current techniques. The main abstractions are models (e.g., schemas, interface definitions) and mappings between models. It treats these abstractions as bulk objects and offers such operators as Match, Merge, Diff, Compose, Apply, and ModelGen. This paper extends earlier treatments o...
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