Explain the features of Amazon SimpleDB ?

(CLOUD COMPUTING -APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY THIRD SEMESTER MCA DEGREE EXAMINATION, JULY 2018)

Amazon SimpleDB

  • Amazon SimpleDB is an attempt to create a high performance data store with many database features.
  • The service is meant to be low touch, in that it abstracts many of the common concerns of database administrators for hardware requirements, software maintenance, indexing, and performance optimization.
  • To create a high performance “simple” database, the data store is non-relational and joins are not supported.
  • Data stored in SimpleDB domains are easily scalable and highly available.
  • Transactions are performed as a set of conditional PUTS and DELETES, and you can INSERT, REPLACE, or DELETE values for item attributes. 
  • Features like ROLLBACK are not supported. 
  • Optimistic concurrency control is maintained using the value of a counter or timestamp.
  • Capacity of SimpleDB database can be increased by scaling out and creating additional data domains.
  • SimpleDB integrates with EC2 instances and S3 storage.
  • Data in SimpleDB is automatically indexed and may be queried as needed.
  • A data domain may be located geographically in any of AWS’s regions.
  • Featured uses of SimpleDB are data logging, online gaming, and metadata indexing.
  • SimpleDB would not be the best choice for a high-volume transaction system.

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