Federated Database Systems

The sources are semi-autonomous and the distribution is peer-to-peer. Each source asks all others in the federation to supply information when needed. One-to-one connections between all pairs of databases, where each database has interface to the others. The software on the top of federation allows user to access it in unified manner.

• Picture
• Schema integration
  ** We will briefly mention it here and refer to the following section about schema integration.