1.甲骨文：
Oracle是一个关系数据库管理系统(RDBMS)。它由Oracle Corporation在1980年开发。它是第一个为网格计算而设计的数据库，它提供了最灵活，最具成本效益的方式来管理信息和应用程序。它可以在Windows，Unix，Linux和macOS等主要平台上运行。它是一个关系数据库，用户可以通过该数据库通过应用程序或称为SQL的查询语言来访问数据。
2.德比：
Derby是一个开放源代码关系数据库管理系统。它由Apache Software Foundation在1997年开发。它完全用Java编程语言编写和实现。 Derby的主要数据库模型是Relational DBMS。所有带有Java VM的操作系统都是服务器操作系统。它根据SQL标准为用户提供了细粒度的访问权限，并提供了一个基于占用空间小的标准数据库引擎，该引擎可以紧密地嵌入到任何基于Java的解决方案中。
Oracle和Derby之间的区别：
| S.No. | ORACLE | DERBY |
|---|---|---|
| 1. | It was developed by Oracle Corporation in 1980. | It is developed by Apache Software Foundation in 1997. |
| 2. | It is a commercial software. | It is an open-source software. |
| 3. | It is written in C and C++. | It is written in Java. |
| 4. | Server operating systems for Oracle are Solaris, Linux, OS X, Windows. | Server operating systems for Derby are Windows, macOs, Linux, Unix, BSD and z/OS. |
| 5. | The replication methods that Oracle supports are Master-Slave Replication and Master-Master Replication. | The Replication methods that Derby support are Master-Slave Replication. |
| 6. | JDBC, ODBC, ODP.NET, OCI are the APIs and access methods used in Oracle. | JDBC are the APIs and other access methods used in Derby. |
| 7. | It uses Horizontal partitioning method for storing different data on different nodes. | It does not support Partitioning methods. |
| 8. | The primary database model for Derby is Relational DBMS. | The primary database model for Oracle is Relational DBMS. |
| 9. | It provides in-memory capabilities. | It also provides in-memory capabilities. |
| 10. | It provides fine grained access rights according to SQL-standard. | It also support fine grained access rights according to SQL-standard. |