MongoDB 和 Amazon SimpleDB 的区别

1. MongoDB：
MongoDB 是一个开源的面向文档的数据库，用于大容量数据存储。它属于 NoSQL 数据库的分类。 NoSQL 工具意味着它不使用通常的行和列。 MongoDB 使用 BSON(文档存储格式)，它是 JSON 文档的二进制样式。

2. 亚马逊简单数据库：
它是亚马逊托管的简单数据库服务，数据存储在亚马逊云中。 Amazon 是一项网络服务，用于实时对结构化数据运行查询。这个数据库是由 Amazon.com 用 Erlang 编写的。它具有以下特点——高可用性和灵活性，很少或没有管理负担。

MongoDB 和 Amazon SimpleDB 的区别：

S.NO.	MongoDB	Amazon SimpleDB
1.	It is developed By MongoDB, Inc in 2009.	It is developed By Amazon in 2007.
2.	It is Open Source.	It is commercial.
3.	Server operating systems for MongoDB is Linux, OS X, Solaris, Windows.	Server operating systems for Amazon SimpleDB is hosted.
4.	Its Primary database model is a Document store.	Its primary database model is the Key-value store.
5.	It has predefined data type such as date or float.	It has has no predefined data type such as date or float.
6.	It supports read-only SQL queries via the MongoDB Connector for BI.	It does not support SQL.
7.	APIs and other access methods for MongoDB is proprietary protocol using JSON.	APIs and other access methods for Amazon SimpleDB is RESTful HTTP API.
8.	Programming languages supported by MongoDB are Actionscript, C, C#, C++, Clojure, ColdFusion, D, Dart, Delphi, Erlang, Go, Groovy, Haskell, Java, JavaScript, Lisp, Lua, MatLab, Perl, PHP, PowerShell, Prolog, Python, R, Ruby, Scala, Smalltalk.	Programming languages supported by Amazon SimpleDB are .Net, C, C++, Erlang, Java, PHP, Python, Ruby, Scala.
9.	It supports Server-side scripting using JavaScript.	It does not support Server-side scripting.
10.	It supports Triggers.	It does not support Triggers.
11.	It supports Partitioning methods using Sharding.	It does not support Partitioning methods.
12.	It does not provide the concept of Referential Integrity. Hence, there is no Foreign Keys.	It also does not provide the concept of Referential Integrity. Hence, there is no Foreign Keys.
13.	It supports Multi-document ACID Transactions with snapshot isolation.	It does not support ACID properties.