Approaches to Sharing of Information
Gio Wiederhold
Stanford University
Approaches to Sharing of Information
Introduction
Methods and Questions
Synchronous?
Sharing levels
Levels
1. Database Integration
2. Database Federation
3. Database Warehousing
4. Mediation Services
Interfaces in 3-layer Systems
Services for Sharing
Quality of Resulting Information
Payment for Services
Legacy is forever
Selection criteria
Dominant approach
Security mediation
Technology Transition .
Summary
Related Work at Stanford