1. HBase：
该模型用于提供对大量结构化数据的随机访问。它建立在 hadoop 文件系统的顶部，本质上是面向列的。它用于将数据存储在 HDFS 中。它是提供数据复制的开源数据库。
2. MongoDB：
MongoDB 是面向文档的，不需要数据的行列格式。它提供高性能并且本质上是动态的，我们不需要像在传统 RDBMS 中那样预定义模式。 MongoDB 以 JSON 格式存储数据，允许您以您想要的任何形式发送数据。它是跨平台数据库，几乎适用于所有平台，如 windows、linux 等。
HBase 和 MongoDB 的区别：
| HBase | MongoDB |
|---|---|
| It is column oriented. | It is document oriented. |
| It is written in JAVA. | It is written in C, C++ and Javascript. |
| Developed by Apache software foundation. | Developed by MongoBD Inc. |
| It has triggers. | It also has triggers. |
| It has no secondary indexes. | It has secondary indexes. |
| Uses a selectable replication factor. | Uses a master-slave replication factor. |
| Data are stored in form of key/value pair. | Data are not stored in form of key/value pair. |
| HBase has high latency operations. | MongoDB has low latency operations. |
| HBase is used to store structured data. | MongoDB is used to store any kind of data. |
| It has distributed database. | It has decentralized database. |
| HBase is less complex than MongoDB. | It is more complex than HBase. |