用于PolarDB的阿里云ApsaraDB与阿里云表存储之间的区别

1.适用于PolarDB的阿里云ApsaraDB：
ApsaraDB for PolarDB是与MySQL，PostgreSQL和Oracle兼容的云原生关系数据库。 ApsaraDB体系结构在单个群集中支持5000台物理机。它是为需要快速性能，高并发性和自动伸缩的关键业务数据库应用程序而设计的。

2.阿里云表存储：
阿里云表存储是一个完全托管的宽列存储，用于通过实时访问的大量半结构化数据。这是使用多种数据模型的NoSQL数据库服务。 Tablestore由阿里云开发，可存储大量结构化数据。它用于有效的查询和数据分析。适用于PolarDB的阿里云ApsaraDB与阿里云表存储之间的区别：

S.NO.	Alibaba Cloud ApsaraDB for PolarDB	Alibaba Cloud Table Store
1.	It was developed by Alibaba in August 2013.	It was developed by Alibaba in 2016.
2.	It is a cloud-native relational database compatible with MySQL, PostgreSQL, and Oracle.	It is a fully managed Wide Column Store for large quantities of semi-structured data with real-time access.
3.	In Alibaba Cloud ApsaraDB for PolarDB there are hosted server operating systems.	In Alibaba Cloud Table Store there are hosted server operating systems.
4.	The license of Alibaba Cloud ApsaraDB for PolarDB is commercial.	The license of Alibaba Cloud Table Store is also commercial.
5.	It supports XML Format.	It does not support XML Format.
6.	It supports the Server-side scripting.	It does not support the Server-side scripting.
7.	There is only one partitioning method – Sharding.	It also support partitioning methods.
8.	It supports SQL query language.	It does not support SQL query language.
9.	It supports replication methods.	It also supports replication methods.
10.	ApsaraDB for PolarDB provides the concept of Referential Integrity. Hence, there are Foreign Keys.	Table Store does not provide the concept of Referential Integrity. Hence, no Foreign Keys.
11.	It supports in-memory capabilities.	It does not support in-memory capabilities.
12.	It does not offer any API for user-defined Map/Reduce methods.	It also does not offer any API for user-defined Map/Reduce methods.
13.	It supports ACID properties.	It supports Atomic single-row operations.
14.	Programming languages supported are Java and Python.	Programming languages supported are Java and Python.