https://training-course-material.com/index.php?action=history&feed=atom&title=Enterprise_Architecture_Repository_and_Model_ExchangeEnterprise Architecture Repository and Model Exchange - Revision history2026-05-12T23:21:44ZRevision history for this page on the wikiMediaWiki 1.45.1https://training-course-material.com/index.php?title=Enterprise_Architecture_Repository_and_Model_Exchange&diff=29099&oldid=prevAhnboyoung: /* Meta Modelling。 */2016-02-07T17:50:10Z<p><span class="autocomment">Meta Modelling。</span></p>
<p><b>New page</b></p><div>{{Cat|Enterprise Architecture|80}}<br />
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<slideshow style="nobleprog" headingmark="。" incmark="…" scaled="false" font="Trebuchet MS" ><br />
;title: Enterprise Architecture Repository and Model Exchange<br />
;author: Bernard Szlachta (bs@NobleProg.co.uk)<br />
</slideshow><br />
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== Meta Modelling。 ==<br />
[[File:M0-m3 Meta Model.png]]<br />
<br />
== Meta-Object Facility (OMG MOF)。 ==<br />
* Originated in UML<br />
* Designed as a four-layered architecture<br />
* It provides a meta-meta model (M3 layer)<br />
* M3-model is the language used by MOF to build metamodels (M2-models, e.g. UML meta-model)<br />
* MOF metamodels are usually modeled as UML class diagrams<br />
* A supporting standard of MOF is XMI (XML-based exchange format for M3,M2 and M1 models)<br />
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== Common Warehouse Metamodel (OMG CWM) 。==<br />
* "Defines a specification for modeling metadata for relational, non-relational, multi-dimensional, and most other objects found in a data warehousing environment"<br />
* Based on UML, MOF, XMI<br />
* Tools can be CWM compliant<br />
* Oracle, Pentaho, IBM support CWM<br />
<br />
Since every data management and analysis tool requires different<br />
metadata and a different metadata model (known as a metamodel) <br />
to solve the data warehouse metadata problem, it is simply <br />
not possible to have a single metadata repository that <br />
implements a single metamodel for all the metadata in an organization.<br />
Instead, what is needed is a standard for interchange of warehouse<br />
metadata.<br />
From spec http://www.omg.org/spec/CWM/<br />
<br />
== XMI。 ==<br />
* The XML Metadata Interchange (XMI)<br />
* Standard for exchanging metadata information via Extensible Markup Language (XML).<br />
* Metadata whose metamodel must be expressed in MOF.<br />
* Usually used for UML, SysML and other MOF compliant languages<br />
* XMI does not exchange the diagram itself (see UMLDI, BPMN 2.0)<br />
* XMI is an ISO standard: ISO/IEC 19503:2005 Information technology <br />
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<br />
* XMI version 2 is substantially different than XMI 1<br />
* Each metamodel will define their own XMI format, therefore some standards use UML profile rather than their own metamodel (SoaML)</div>Ahnboyoung