CS4624 Text - Ch 10

Key Ideas:

1. Distribution is viewed from various models: client-server, object servers, topologies, databases, distributed objects

Outline:

1. Components of a distributed multimedia systems objects
   • Application software
   • Document store
   • Image and still video store
   • Audio and full-motion video store
   • Object directory service agent
   • Component service agent
   • User interface service agent
2. Distributed client-server operation
   • Clients in distributed workgroup computing
   • Servers in distributed workgroup computing
   • Database operations
   • Middleware in distributed workgroup computing
3. Multimedia object servers
   • Types of multimedia servers
   • Mass storage for multimedia servers: WORMs, re-writable optical disks, optical disk libraries
   • Network topologies for multimedia object servers
4. Multiserver network topologies
   • Traditional LANs
   • Extended LANs: Switching hubs, bridges and routers, switching and routing latency
   • High-speed LANs
   • WANs: Protocol layering, Always-connected, Layering packets
   • Network performance issues
5. Distributed multimedia databases
   • Database organization for multimedia applications: Data independence, Architecture, Multiple data servers
   • Transaction management for multimedia systems
   • Managing hypermedia records as objects: OLE
6. Managing distributed objects
   • Interserver communications
   • Object server architecture
   • Object indentification: Object identify, Identification method, Copied and merged objects, ID in networks
   • Object revision management: Versioning
   • Optimizing network location of objects
   • Object directory services: Locking, Directory synch
   • Multimedia object retrieval: Services provided, Data structures, Object recompilation, Using ORBs, Retrieval conflicts
   • Database replication techniques: Types, Design criteria, Design issues, Services
   • Object migration schemes
   • Optimizing object storage: By object type, Load balancing, Versioning