Metadata "crosstab" MC

Metadata "crosstab" MC

Metadata crosswalks

MC promotes metadata interoperability and exchange. An MC is the transformation/ ing of elements, semantics, and syntax between different metadata modes.

A crosswalk allows metadata created by one community to be used by other groups that adopt different metadata standards. The validity of crosswalk in their respective record layers depends on the similarity between the two modes. The element granularity of the Target mode is compared with the source element granularity, and the compatibility of the element content rules used to fill each mode.

Crosswalks is very important for formal visual sets because these resources may be drawn from different sources and may only be suitable for a search engine ). When these are critical, they increase development and maintenance efforts. Switching between modes with few elements and those with many elements (more granularity) is a problem. The Crosswalk between the Dublin Core and Marc 21 and the selected elements of the VRA core is displayed. In this case, there is no content-level ing.

Table 1 metadata ing instance

 

 

Metadata registry

Metadata Registries

 

Registry is an important tool for managing metadata. The metadata registry provides information about data definitions, origins, sources, and locations. The Registry is suitable for many layers, including the code list of modes, user configurations, metadata elements, and element values. The metadata registry provides a complete resource for legacy data, just like a new database designer's checking tool that archives every data element.

The Registry can also archive multiple modes or element sets, especially in special fields of interest. A good example is the environmental data registry of the US Environmental Protection Agency, which provides information for thousands of data elements in the current and legacy EPA databases.

Standards are related to various registries, including ISO/IEC 11179, Data Element conventions and standards (specification and standardization of data elements) and ANSI x3.285, the original model that can share data management (meta-model for the management of sharable data ).