Three essential data products—a glossary, a data dictionary, and a logical data model—are needed to support a key goal of the Biometrics Identity Management Agency: define and standardize an architecture that will meet DoD’s current and future biometric requirements in support of business and warfighter needs. Together, the three products will help establish and promote a consistent language for the data that are used and exchanged within the DoD community.
The biometrics glossary was jointly developed to establish an official vocabulary of terms for the DoD biometrics community. Initially published in February 2008 and updated in June and again in August, the glossary provides definitions for the conceptual and operational terms that are commonly used in biometrics discussions and in formal documents such as DoD directives, concepts of operations, and materials required in the Joint Capabilities Integration and Development System process, for example, initial capabilities documents, capabilities design documents (CDDs), and capabilities production documents (CPDs).
Versions of the biometrics glossary were used in the Next Generation Automated Biometric Identification System (ABIS) v1.0 CPD and in support of the initial capabilities development team.
Going forward, the biometrics glossary will be published semiannually, with future editions expected to contribute to documents required for Biometric Enabling Capabilities Milestone B and the Joint Personnel Identity Management System (JPIMS) CDD.
Integrated Data Dictionary
The initial version of the integrated data dictionary for biometrics was published in the fall of 2007. The dictionary contains detailed definitions of the data elements of interest to the DoD biometric community and of the primary attributes or characteristics of the data elements. The dictionary will serve as a reference for members of the DoD biometrics community who have a vested interest (for example, the material developers of the DoD biometric systems) in specific data-element-level information and will help establish consistency across the DoD biometric systems as they interoperate with each other and with other U.S. government and international biometric systems.
The data of the following critical DoD biometric systems were analyzed and used as the basis of the initial integrated data dictionary:
- Automated Biometric Identification System
- Biometrics Automated Toolset
- Biometric Intelligence Repository
- Biometric Identification System for Access
- Defense Biometrics Identification System
- Detainee Reporting System
- Expanded Maritime Interdiction Operations Tool Set
- Handheld Interagency Identity Detection Equipment
- Next Generation ABIS
- Special Operations Command Jump Kit.
Data elements of the in-scope systems have been cross-referenced as an initial step toward identifying current data-sharing deficiencies and will be used to help drive the requirements to resolve them. The integrated data dictionary is also being used to help validate the core biometrics data model.
Logical Data Model
Logical data models, or entity-relationship models, describe the structure of data and the business rules that govern them. The logical data model can represent the concepts of an entity (a concept of interest), an attribute (characteristics of the entity), a relationship (a link between entities), and a domain (the possible values for an entity). In the DoD Architecture Framework (DoDAF), the logical data model is a system’s Operational View (OV-7).
In 2007 and early 2008, DoDAF architecture-centric biometric data models were developed. Subsequently, work was done to extract and enhance a core biometric data model from those earlier data models. The core biometric data model was developed in collaboration with various DoD organizations, including Project Manager Biometrics, the Biometric Standards Working Group, the National Ground Intelligence Center, and the Architecture Integration and Management Directorate within the Training and Doctrine Command.
The core model—the DoD biometric OV-7—was integrated with the results of work on the integrated data dictionary. The result is a broadly applicable biometrics information exchange data model.
The DoD biometric OV-7 effectively serves as the foundation for the exchange of biometric data both within DoD and with its data exchange partners such as the FBI and the Department of Homeland Security. By creating consistent data structures, the core biometric data model provides a common schema for data interoperability among DoD systems with a biometric component.
An early version of the core biometric data model was included in the Next Generation ABIS v1.0 CPD. Currently, the core biometric data model is being refined to produce versions that will support specific needs of the biometrics community, including v2.0 of DoD’s Electronic Biometrics Transmission Specification, Biometrics Enabling Capabilities Milestone B, and JPIMS CDD.
A Biometrics Data Sharing Community of Interest has been formed to be a primary vehicle by which the three essential data products—the biometrics glossary, the integrated data dictionary, and the core biometric data model—will be matured and reviewed by the biometrics community’s many partners. Analysis of these products will inevitably identify areas of inconsistency—overlapping and disparate data elements and gaps that will make interoperability between critical in-scope DoD biometrics systems impossible without resolution to establish a common standard. The Community of Interest will provide the forum for members to discuss and resolve issues.