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Metadata modeling is a type of metamodeling used in software engineering and systems ... This is basically an adjusted class diagram as described in Booch, Rumbaugh ...
The Diagram Definition OMG project is another alternative for metadata interchange, which can also express the layout and graphical representation. [2] XMI is an international standard: XMI 2.4.2 ISO/IEC 19509:2014 Information technology — XML Metadata Interchange (XMI) XMI 2.0 ISO/IEC 19503:2005 Information technology — XML Metadata ...
Descriptive metadata is typically used for discovery and identification, as information to search and locate an object, such as title, authors, subjects, keywords, and publisher. Structural metadata describes how the components of an object are organized. An example of structural metadata would be how pages are ordered to form chapters of a book.
This type of "translating" from one format to another is often called "metadata mapping" or "field mapping," and is related to "data mapping", and "semantic mapping". Crosswalks also have several technical capabilities. They help databases using different metadata schemes to share information. They help metadata harvesters create union catalogs.
Metadata is often said to be "data about data", but this is misleading. Data profiles are an example of actual "data about data". Metadata adds one layer of abstraction to this definition– it is data about the structures that contain data. Metadata may describe the structure of any data, of any subject, stored in any format.
Example of a Geologic map information meta-model, with four types of meta-objects, and their self-references. [1]A metamodel is a model of a model, and metamodeling is the process of generating such metamodels.
In the future, tools based on semantic web languages such as RDF, the Web Ontology Language (OWL) and standardized metadata registry will make data mapping a more automatic process. This process will be accelerated if each application performed metadata publishing. Full automated data mapping is a very difficult problem (see semantic translation).
A type of structural and metadata encoding system using an XML Document Type Definition (DTD) was the result of these efforts. The MoAII DTD was limited in that it did not provide flexibility in which metadata terms could be used for the elements in the descriptive, administrative, and structural metadata portions of the object. [5]