This technical paper contains the Earth Science Data (Conceptual) Model, which organizes and
describes the metadata, for the Earth Observation System Data and Information Core System
(ECS), for Release 6A Implementation Design. The Data Model includes diagrams that
graphically illustrate the relationships between classes, and the attribute specifications. The
relationships and information among data objects are described as they are understood and
utilized within the Earth Science Community. In addition, the Data Model includes diagrams that
graphically illustrate the relationships of classes, the attributes contained within the classes, the
characteristics of the relationships between classes, and the attribute specifications. The
diagrams and specifications which were previously products of the Interactive Development
Environment (IDE)/Object Modeling Technique (OMT) Computer Aided Software Engineering
(CASE) Tool, have changed to products of Power Designer, an Entity Relationship Diagram
(ERD) representation. The specifications are defined in alphabetical order for cross-reference to
the diagrams. This document has incorporated updated material from addendums/erratas from
B.0 Implementation Data Model dated May 1997 through Release 6A Data Model dated
March 2001.
The relationships and information among the data objects are described as they are
understood and used within the Earth Science Community. In conclusion, this technical paper
continues to remain under the control of the ECS Configuration Control Board. (kpr)
Supersedes 420-TP-022-001