1. Amazon Neptune :
Amazon Neptune is a fast, reliable graph database built for the cloud product by Amazon.com. It is part of Amazon Web Services (AWS). It was announced on November 29, 2017. It supports both the open-source Apache TinkerPop Gremlin graph traversal language. It allows the user to encrypt databases using keys created through AWS Key Management Service.
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 Neptune and Amazon SimpleDB :
| S.NO. | Amazon Neptune | Amazon SimpleDB |
|---|---|---|
| 1. | Developed By Amazon in 2017. | Developed By Amazon in 2007. |
| 2. | It is a fast, reliable graph database built for the cloud product by Amazon.com | It is a hosted simple database service by Amazon, with the data stored in the Amazon Cloud. |
| 3. | It supports the ACID property. | It does not support the ACID property. |
| 4. | It provides the concept of Referential Integrity. Hence, there are Foreign Keys. | It does not provide the concept of Referential Integrity. Hence, no Foreign Keys. |
| 5. | Its Primary database model is Graph DBMS and RDF store. | Its primary database model is the Key-value store. |
| 6. | Immediate Consistency is used to ensure consistency in a distributed system. | Eventual Consistency and Immediate Consistency is used to ensure consistency in a distributed system. |
| 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 multi-availability zones high availability. | It supports replication methods. |
| 9. | It supports predefined data types such as float or date. | It does not support predefined data types such as float or date. |
| 10. | It supports secondary indexes. | It does not support secondary indexes. |
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