2.2.2 Data Architecture Models

The purpose of this section is to define the baseline data architecture for the domain/sub-domain. The data domain team will only produce a detailed set of target data architecture documentation at the planning, conceptual, and logical levels. Thus, the relevant domain only needs to produce relevant artifacts from those highlighted in this section as per their needs. In terms of quality criteria, this section may make clear: • Relevant views (diagrams) at the planning level illustrating the information subject areas in scope for the baseline data architecture, as well as the relationships between them • Description of the planning-level view(s) for the baseline data architecture in order to understand the architectural decisions that have been taken and resulting key messages for the stakeholders • Definitions for the information subject areas (in table format) in scope for the baseline data architecture • Descriptions of the relationships and cardinality (if relevant) between the information subject areas (in table format) in scope for the baseline data architecture • Relevant views (diagrams) at the conceptual level illustrating the business objects in scope for the baseline data architecture, as well as the relationships between them; these medium-level business objects will have been derived from the high-level information subject areas • Description of the conceptual-level view(s) for the baseline data architecture in order to understand the architectural decisions that have been taken and resulting key messages for the stakeholders • Definitions for the business objects (in table format) in scope for the baseline data architecture • Descriptions of the relationships and cardinality (if relevant) between the business objects (in table format) in scope for the baseline data architecture • Relevant views (diagrams) at the logical level illustrating the logical data entities in scope for the baseline data architecture, as well as the relationships between them. These lower-level logical data entities will have been derived from the medium-level business objects • Description of the logical-level view(s) for the baseline data architecture in order to understand the architectural decisions that have been taken and resulting key messages for the stakeholders • Definitions for the logical data entities (in table format) in scope for the baseline data architecture • Characteristics of the logical data entities (in table format) in scope for the baseline data architecture • Descriptions of the relationships and cardinality (if relevant) between the logical data entities (in table format) in scope for the baseline data architecture • Any additional viewpoints and thus views that are required for this section due to new stakeholder requirements; these views will then be followed by descriptions for the views and definitions for the view artifacts • Any assumptions that have been used to define the baseline data architecture