# Amazon SimpleDB Concepts
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**Topics**
+ [Data Model](DataModel.md)
+ [Operations](Operations.md)
+ [API Summary](APISummary.md)
+ [Consistency](ConsistencySummary.md)
+ [Limits](SDBLimits.md)
+ [Data Set Partitioning](DataSetPartitioningConcepts.md)
+ [AWS Identity and Access Management](IAM.md)

This section describes the key concepts that you should understand before using Amazon SimpleDB.