The Administrative Data Repository (ADR) consists of a clustered transactional database designed and implemented to host demographic, identity management, eligibility/enrollment, Patient Protection Affordable Care Act (PPACA) transaction logging data, and the Veteran’s benefit plan for all persons, a reporting database for overall customer reports, and a content repository to house Veterans Benefit Handbooks. Per the Department of Veterans Affairs (VA) enterprise n-tier architecture, ADR serves as the data layer and its consuming/supporting applications make up the service layer.