Labels:text | map | atlas OCR: User ID Subsystem Physically e.g. Smart Card Insecure External Remote Link Network Client PC Encrypton e.g. Internet Link Encryptor Firewal Router User ID Subsystem Client PC Physically Authentication Access Control Agent Server Server Secure Intranet Application Server Data Warehouse Data Data Data Serval Server Serve? Figure 1. A typical security architecture for an enterprise data warehouse,