1. Introduction
2. Data Modeling
   1. Multimedia Data Support in Commercial DBMSs
   2. The MULTOS Data Model
3. Query Languages
   1. Request Specification
   2. Conditions on Multimedia Data
   3. Uncertainty, Proximity and Weights in Query Expressions
   4. Some Proposals
      1. The SQL3 Query Language
      2. The MULTOS Query Language
   5. Trends and Research Issues
   6. Bibliographic Discussion

By E. Bertino,B. Catania and E. Ferrari