1. RDBMS：
RDBMS代表关系数据库管理系统。它是最流行的数据库。在其中，数据以元组形式的行形式存储。它包含表的数目，并且由于数据存储在表中，因此可以轻松访问数据。该模型由EF提出
2. Couchbase：
Couchbase Server是一个开放源代码，分布式，多模型，NoSQL，面向文档的数据库软件包，已针对交互式应用程序进行了优化。它也被称为Membase。它由Couchbase，Inc.开发，最初于2010年8月发布。
RDBMS和Couchbase之间的区别：
| S.No. | RDBMS | Couchbase |
|---|---|---|
| 1. | RDBMS is a relational database. | It is a non-relational and document-oriented database. |
| 2. | RDBMS is column-based. | Couchbase is field-based. |
| 3. | It has a predefined schema. | It has a dynamic schema. |
| 4. | It is slower in comparison with Couchbase. | Couchbase is faster than RDBMS. |
| 5. | It supports SQL query language only. | It supports JSON query language. |
| 6. | RDBMS does not provide JavaScript client for querying. | It provides a JavaScript client for querying. |
| 7. | RDBMS is not suitable for hierarchical data storage. | Couchbase is suitable for hierarchical data storage. |
| 8. | It centers around ACID properties. | It also centers around ACID properties. |
| 9. | RDBMS is vertically scalable. | Couchbase is horizontally scalable. |
| 10. | It supports complex joins. | It doesn’t support for complex joins. |