ITOS Group

ITOS

• Overview
• Mission History
• Capabilities
• System Requirements

DMS

• Overview
• Mission History
• Capabilities
• Architecture
• System Requirements

General

• Development Philosophy
• Contact
• Support

Data Management System (DMS) Overview

• The DMS processes, moves, and tracks products -- i.e. files -- as they flow between ground components.
• The DMS manages products that must be approved before they can be used — the DMS manages which users can sign which products and keeps track of whether or not a product has been signed.
• Major DMS components are the database, the web portal, the central agent, and the remote agents.
• The DMS is a distributed system; the database, web portal, and central agent run on DMS servers and remote agents are distributed across ground computers.
• The DMS is configured via the “model”, a <dms-model> XML document.
• The model predicts what should happen, the remote agents report what actually happened, and the central agent's expectation engine issues alerts when they don’t agree.
• The web portal lets users find products, review product flow, and sign products and lets administrators manage and tune the DMS.
• The DMS is highly configurable; there are about 100 “tunable parameters”.
• The DMS can generate ICD documentation from the model.
• The DMS is designed to run continuously for years, but is robust enough that its components can pick up where they left off when shut off and restarted.
• The DMS uses the PostgreSQL database engine. DMS components are coded using Java, XSLT, and PHP.