1. 甲骨文：
Oracle 是由 Oracle Corporation 开发的商业软件。 Oracle 广泛使用 RDBMS。 Oracle 允许快速安全地存储和检索数据。它用于运行在线事务处理和数据仓库。 Oracle 可在大多数主要操作系统上运行，如 Mac OS、Unix、Windows 和 Linux。 Oracle 有一个网络堆栈，允许来自不同平台的应用程序轻松地与 Oracle 通信。
2. 玛丽亚数据库：
MariaDB 是一种开源关系数据库管理系统 (RDBMS)，是广泛使用的 MySQL 数据库技术的兼容替代品。它由 MariaDB Foundation 开发并于 2009 年 10 月 29 日首次发布。MariaDB 具有大量新功能，这使其在性能和用户导向方面优于 MySQL。 Oracle 和 MariaDB 的区别：
| S.NO. | Oracle | MariaDB |
|---|---|---|
| 1. | It was developed by Oracle Corporation. | It was developed by MariaDB Foundation. |
| 2. | It was launched in 1980. | It was released on 29 October 2009. |
| 3. | Oracle is written in C and C++ language. | MariaDB is written in C, C++, Perl and Bash languages. |
| 4. | It has predefined datatypes (e.g., in PL/SQL package). | It has predefined datatypes such as float, date, number, etc. |
| 5. | It supports concept of Referential Integrity. | It also supports concept of Referential Integrity. |
| 6. | It is not free of data schema. | It is free of data schema. |
| 7. | Oracle server operating system is Oracle. | MariaDB server operating systems are FreeBSD, Linux, Solaris and Windows. |
| 8. | It uses Horizontal partitioning with the Optional Oracle Partitioning methods. | MariaDB does not use any partitioning method. |
| 9. | It uses Selectable Replication method. | It does not use any replication method. |