Data Clouds

Data clouds provide a service in platform independent manner to store and retrieve data. User does not care what kind of system stores the data and does not bother about administration. The service grantees high availability, scalability and availability and low latency.

The requirements of data cloud solution are multi-tenancy, metering and health monitoring. Metering, would be crucial to appropriately apportion the shared cost of running the service, and would entail keeping track of CPU cycles consumed, disk and memory space consumed, and possibly even bandwidth.

Example is Amazon SimpleDB

Amazon SimpleDB is a highly available, scalable, and flexible non-relational data store that offloads the work of database administration. Developers simply store and query data items via web services requests, and Amazon SimpleDB does the rest.