资源科学
資源科學
자원과학
Resources Science
2000年
6期
14-17
,共4页
资源与环境信息系统%模型集成%元数据%方法元数据
資源與環境信息繫統%模型集成%元數據%方法元數據
자원여배경신식계통%모형집성%원수거%방법원수거
Geographic Information System%Model integration%Metadata%Method metadata
探讨编写模型方法元数据的必要性和可行性,给出方法元数据标准的基本框架和适用的方法元数据管理模型,并研究了基于方法元数据的模型管理模式。本文认为模型方法元数据应当包括标识信息、适用领域、模型参数、运行条件、性能、原理、模型实现和管理信息等8个方面的内容。方法元数据可以采用文本文件、关系数据库和面向对象数据库管理;基于方法元数据建立构模语言可方便的实现资源与环境应用模型的运行管理。
探討編寫模型方法元數據的必要性和可行性,給齣方法元數據標準的基本框架和適用的方法元數據管理模型,併研究瞭基于方法元數據的模型管理模式。本文認為模型方法元數據應噹包括標識信息、適用領域、模型參數、運行條件、性能、原理、模型實現和管理信息等8箇方麵的內容。方法元數據可以採用文本文件、關繫數據庫和麵嚮對象數據庫管理;基于方法元數據建立構模語言可方便的實現資源與環境應用模型的運行管理。
탐토편사모형방법원수거적필요성화가행성,급출방법원수거표준적기본광가화괄용적방법원수거관리모형,병연구료기우방법원수거적모형관리모식。본문인위모형방법원수거응당포괄표식신식、괄용영역、모형삼수、운행조건、성능、원리、모형실현화관리신식등8개방면적내용。방법원수거가이채용문본문건、관계수거고화면향대상수거고관리;기우방법원수거건립구모어언가방편적실현자원여배경응용모형적운행관리。
This paper sets forth that method metadata is necessary for resource and environment information system. It provides a frame and a management model of method metadata. Model management is discussed based on method metadata. It is held that model metadata should consist of an identifier, problem fields, model parameters, run conditions, model performances, model principles, implementation details, and management information. The first four items and the eighth item are the contents of basic set which are indispensable. The fifth, sixth and seventh items are the contents of extended set which are optional. The sum of a basic set and the extended set is the method metadata superset. Three types of data model of method metadata are identified as relation model, extended relation model and oriented-objectives model. A model includes its method metadata and its executable program. Three types of storage mode of method metadata are also identified as basic text file system, extended relation database system, and oriented-objective database system. The executable program can be an *.exe program, a DLL file, a COM/ActiveX or COBRA/Java component. The method metadata management system makes up of method metadata browsers, method metadata servers and method metadata editors. We can manage models by a model builder and a model interpreting executor in virtue of method metadata.