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   ocr: A DATA WAREHOUSE IMPLEMENTATION TIMELINE Rolling out. a data warehouse can seem overwhelming, but it really breaks down into four major steps: readiness assessment, modeling, development, and depioyment. Readiness Assessment and Requirements Headiness Assessment Data Requirements Modeling, Mapping, and Technical Architecture Gathening - Develop Data Model Identily High-Payback Technical Architecture Warehouse Development Project Design Begins Tool nstallaticn and Integration Analyze and Map Lagacy Mapping Process Data Competed Deployment Legacy System Oata Testing Loaded Ento Data warehouse Us ...