Document Stores

Document stores are designed to store data that is already structured in some form of notation like JSON or XML. They typically focus on one specific type of notation and are intended to allow entire objects, including arrays and hashes, to be stored and retrieved at once.

Many times document stores are implemented as a layer between an application and a relational database to hold the output of certain types of queries. For example, it might be convenient to aggregate information that is typically requested together such as a set of user preferences or name and address information and store it as one object. Requesting and retrieving only one object that is already formatted in an object notation like JSON is faster than making ...

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