Public Interface Export Function › Internal Design Objects

Internal Design Objects

For the purposes of Export, Internal Design objects are those created in the Data Store List. The Data Store List is used to implement a conceptual data model (ERD) in a physical data environment (DBMS). For example, entity types are implemented as records; attributes are implemented as fields; relationships are implemented as linkages; identifiers are implemented as entry points, and so forth.

Physical data objects such as databases, data stores, indexes, and data sets are defined or identified for use, and the Data Definition Language (DDL) statements to define them are created.

Data Store List objects are entered into the Host Encyclopedia using the Data Store List tool and the ERD–DSD transformation. The ERD represent the conceptual schema of the ANSI/SPARC three-schema architecture. The DSD captures the external schema and internal schema, which together implement the conceptual schema. For illustrations representing the relationships of internal and external schema objects, see the appendix "Relationships Between PI Tables."