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In software engineering, a Library Oriented Architecture (LOA) is a set of principles and methodologies for designing and developing software in the form of reusable software libraries constrained in a specific ontology domain. LOA provides one of the many alternate methodologies that enable the further exposure of software through a service-oriented architecture. Library orientation dictates the ontological boundaries of a library that exposes business functionality through a set of public APIs. Library Oriented Architecture further promotes practices similar to Modular Programming, and encourages the maintenance of internal libraries and modules with independent internal open-source life-cycles. This approach promotes good software engineering principles and patterns such as separation of concerns and designing to interfaces as opposed to implementations. ==Principles== Three principles rule Library Oriented Architecture frameworks: # A software library implementation and subject area expertise must be constrained to only one ontology domain. # A software library that needs to use concepts and artifacts from a different ontology domain than the one it belongs to, must interface and reuse the library corresponding to that specific ontology domain. # All domain specific software libraries must be maintained and supported with separate life-cycles. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Library Oriented Architecture」の詳細全文を読む スポンサード リンク
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