egeria

Open Metadata and Governance

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The open metadata type system

Knowledge about data is spread amongst many people and systems. One of the roles of a metadata repository is to provide a place where this knowledge can be collected and correlated in as automated fashion as possible. To enable many different tools and processes to populate the metadata repository we need agreement on what data should be stored and in what format (structures).

Figure 1 shows the different areas of metadata that a metadata repository needs to support a wide range of metadata management and governance tasks.

Figure 1: Common metadata areas

Figure 1: Common metadata areas

Figure 2 provides more detail of the metadata structures in each area.

Figure 2: Metadata detail within the metadata areas

Figure 2: Metadata detail within the metadata areas

Within each area, the definitions are broken down into numbered packages to help identify groups of related elements. The numbering system relates to the area that the elements belong to. For example, area 1 has models 0100-0199, area 2 has models 0200-299, etc. Each area’s sub-models are dispersed along its range, ensuring there is space to insert additional models in the future.


License: CC BY 4.0, Copyright Contributors to the ODPi Egeria project.