1. Amazon DocumentDB :
It is a commercial licensed database that has the following features as it is a fast, scalable, highly available and fully managed document database service that supports MongoDB workloads. It is currently available in California, Oregon, North Virginia and Ireland regions of AWS. It implements Apache 2.0 open-source MongoDB 3.6 API by emulating the responses.
2. Amazon SimpleDB :
It is a hosted simple database service by Amazon, with the data stored in the Amazon Cloud. It is Amazon is a web service for running queries on structured data in real-time. This database is written in Erlang by Amazon.com. It has the following features – high availability and flexibility, with little or no administrative burden.
Difference between Amazon DocumentDB and Amazon SimpleDB :
|S.NO.||Amazon DocumentDB||Amazon SimpleDB|
|1.||It is developed By Amazon in 2019.||It is developed By Amazon in 2007.|
|2.||It is a fast, scalable, highly available, and fully managed MongoDB-compatible database service.||It is a hosted simple database service by Amazon, with the data stored in the Amazon Cloud.|
|3.||It supports predefined data types such as float or date.||It does not support predefined data types such as float or date.|
|4.||Its Primary database model is a Document store.||Its primary database model is the Key-value store.|
|5.||It does not offers an API for user-defined Map/Reduce methods. But maybe implemented via Amazon Elastic MapReduce (Amazon EMR).||It does not offer an API for user-defined Map/Reduce methods.|
|6.||It supports Atomic single-document operations.||It does not support the ACID property.|
|7.||It does not support partitioning methods.||It also does not support partitioning methods. But sharding must be implemented in the application.|
|8.||It supports SQL query language.||It does not support the SQL query language.|
|9.||It supports Multi-availability zones for high availability.||It supports replication methods.|
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