4.4. Data Context Section of the DRM Abstract Model    (3X3U)

The Data Context section of the DRM abstract model is shown in figure 4-1. It depicts the concepts that comprise the Data Context standardization area and the relationships between them. Concepts are expressed as boxes, while relationships are expressed as arrows    (3X3V)

http://colab.cim3.net/file/work/das/DRM_2.0/Figure_4_1.JPG    (3YPS)

Figure 4-1 Data Context Section of the DRM Abstract Model    (3YPW)

The following are definitions for each of the concepts and relationships within the figure shown above. Conventions used are:    (3X3W)

Taxonomy: A collection of controlled vocabulary terms organized into a hierarchical structure. Taxonomies provide a means for categorizing or classifying information within a reasonably well-defined associative structure, in which each term in a Taxonomy is in one or more parent/child (broader/narrower) relationships to other terms in the Taxonomy. A common example of a Taxonomy is the hierarchical structure used to classify living things within the biological sciences from Carols Linnaeus, as shown in Figure 4 2:    (3X42)

http://colab.cim3.net/file/work/das/DRM_2.0/Figure_4_2.JPG    (3YPU)

Figure 4-2 Carols Linnaeus Taxonomy    (3YPX)

Structured Data Resource: See the Data Description chapter.    (3X46)

Topic: A category within a Taxonomy. A Topic is the central concept for applying context to data. For example, an agency may have a Taxonomy that represents their organizational structure. In such a Taxonomy, each role in the organizational structure (e.g. CIO) represents a Topic. Topic is often synonymous with “node”.    (3X47)

Digital Data Resource: See the Data Description chapter.    (3X4E)

Query Point: See the Data Sharing chapter.    (3X4F)

Exchange Package: See the Data Sharing chapter.    (3X4G)

Relationship: Describes the relationship between two Topics.    (3X4H)

Data Asset: A managed container for data. In many cases, this will be a relational database; however, a Data Asset may also be a Web site, a document repository, directory or data service.    (3X4L)

Data Steward: A person responsible for managing a Data Asset.    (3X4P)

Other FEA Reference Model: This concept represents the four other FEA reference models – the Business Reference Model (BRM), the Service Component Reference Model (SRM), the Technical Reference Model (TRM), and the Performance Reference Model (PRM). Its purpose is to provide a linkage to these other reference models, which are themselves Taxonomies. These are depicted as a special kind of Taxonomy due to their importance in overall classification of information.    (3X4S)