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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
provided by the
Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 11 to 13 of 13 (0.034 seconds)Spelling suggestions: "subject:"[een] SCHEMA EVOLUTION"" "subject:"[enn] SCHEMA EVOLUTION""
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A Flexible Graph-Based Data Model Supporting Incremental Schema Design and EvolutionBraunschweig, Katrin, Thiele, Maik, Lehner, Wolfgang 26 January 2023 (has links)
Web data is characterized by a great structural diversity as well as frequent changes, which poses a great challenge for web applications based on that data. We want to address this problem by developing a schema-optional and flexible data model that supports the integration of heterogenous and volatile web data. Therefore, we want to rely on graph-based models that allow to incrementally extend the schema by various information and constraints. Inspired by the on-going web 2.0 trend, we want users to participate in the design and management of the schema. By incrementally adding structural information, users can enhance the schema to meet their very specific requirements.
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Coping with evolution in information systems: a database perspectiveLawrence, Gregory 25 August 2009 (has links)
Business organisations today are faced with the complex problem of dealing with
evolution in their software information systems. This effectively concerns the
accommodation and facilitation of change, in terms of both changing user
requirements and changing technological requirements. An approach that uses the
software development life-cycle as a vehicle to study the problem of evolution is
adopted. This involves the stages of requirements analysis, system specification,
design, implementation, and finally operation and maintenance. The problem of
evolution is one requiring proactive as well as reactive solutions for any given
application domain. Measuring evolvability in conceptual models and the
specification of changing requirements are considered. However, even "best designs"
are limited in dealing with unanticipated evolution, and require implementation phase
paradigms that can facilitate an evolution correctly (semantic integrity), efficiently
(minimal disruption of services) and consistently (all affected parts are consistent
following the change). These are also discussed / Computing / M. Sc. (Information Systems)
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| 13 |
Coping with evolution in information systems: a database perspectiveLawrence, Gregory 25 August 2009 (has links)
Business organisations today are faced with the complex problem of dealing with
evolution in their software information systems. This effectively concerns the
accommodation and facilitation of change, in terms of both changing user
requirements and changing technological requirements. An approach that uses the
software development life-cycle as a vehicle to study the problem of evolution is
adopted. This involves the stages of requirements analysis, system specification,
design, implementation, and finally operation and maintenance. The problem of
evolution is one requiring proactive as well as reactive solutions for any given
application domain. Measuring evolvability in conceptual models and the
specification of changing requirements are considered. However, even "best designs"
are limited in dealing with unanticipated evolution, and require implementation phase
paradigms that can facilitate an evolution correctly (semantic integrity), efficiently
(minimal disruption of services) and consistently (all affected parts are consistent
following the change). These are also discussed / Computing / M. Sc. (Information Systems)
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