Question: How is data stored in DynamoDB?

Rafal Wilinski

Answered by Rafal Wilinski


In DynamoDB, data is stored as items within tables. An item is a collection of key-value pairs, where each key is a string that represents the name of an attribute, and the value is the data for that attribute. An item can have any number of attributes, and the data type for each attribute can be one of several supported scalar types, sets, or complex data types such as maps and lists.

Data is stored in tables, which are logical containers for items. A table has a primary key, which is a unique identifier for each item in the table. Tables are horizontally partitioned across multiple servers and regions, and are automatically sharded and replicated to provide high availability and durability.

DynamoDB provides a number of powerful querying and indexing capabilities that allow users to efficiently access and retrieve data from their tables. This includes the ability to perform secondary indexes, global secondary indexes, and local secondary indexes, as well as the ability to use query filters and condition expressions to refine the results of a query.

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