Amazon Aurora和Amazon SimpleDB之间的区别

1. Amazon Aurora：
它是来自Amazon Web Services的完全托管的关系数据库引擎，与PostgreSQL和MySQL兼容。它比标准MySQL数据库快五倍，比标准PostgreSQL数据库快三倍。 Aurora的功能是分布式，容错和自我修复的存储系统。

2. Amazon SimpleDB：
它是Amazon托管的简单数据库服务，数据存储在Amazon Cloud中。它是Amazon是一项用于实时在结构化数据上运行查询的Web服务。该数据库由Amazon.com用Erlang编写。它具有以下功能–高可用性和灵活性，几乎没有管理负担。

Amazon Aurora和Amazon SimpleDB之间的区别：

S.NO.	Amazon Aurora	Amazon SimpleDB
1.	Developed By Amazon in 2015.	Developed By Amazon in 2007.
2.	It is a MySQL and PostgreSQL compatible cloud service by Amazon.	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.	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.
5.	Its Primary database model is Relational DBMS.	Its primary database model is the Key-value store.
6.	It supports Server-side scripting.	It does not support the Server-side scripting.
7.	The partitioning can be done with horizontal partitioning.	It does not support partitioning methods.
8.	It supports SQL query language.	It does not support the SQL query language.
9.	It supports only one replication method – Master-slave replication.	It supports replication methods.
10.	It provides the concept of Referential Integrity. Hence, no Foreign Keys.	It does not provide the concept of Referential Integrity. Hence, no Foreign Keys.
11.	It supports predefined data types such as float or date.	It does not support predefined data types such as float or date.