数据库是信息的集合,其结构方式易于管理和更新。为了使这项任务更容易,已经创建了各种数据库管理系统 (DBMS)。其中包括 MySQL、PostgreSQL、MongoDB、Redis 等。
1. MySQL
它是最著名的开源关系数据库管理系统 (RDMS) 之一。此表中的数据存储在表中,这使得执行 CRUD 操作(创建、读取、更新和删除)变得容易。 MySQL的一些特性是:
- 快速、简单且可靠。
- 可用于大型和小型应用程序。
- 提供高可扩展性
2. PostgreSQL:
它是一个功能强大的开源对象关系数据库系统。由于其高稳定性,它提供了良好的性能和低维护工作。PostgreSQL 是第一个实现多版本并发控制 (MVCC)功能的 DBMS。 PostgreSQL 的一些亮点是:
- 支持大量语言。
- 它处理高级安全功能。
- 它具有地理标记支持。
MySQL 和 PostgreSQL 的区别:
S.NO. | MySQL | PostgreSQL | |||
---|---|---|---|---|---|
1. | It is the most popular Database. | It is the most advanced Database. | |||
2. | It is a relational based DBMS. | It is an object based relational DBMS | 3. | It is ACID complaint only when using with InnoDB and NDB cluster engines | It is ACID complaint from the ground up. |
4. | Implementation language is C/C++. | Implementation language is C. | |||
5. | It does not support CASCADE option. |
CASCADE option is supported. |
|||
6. | GUI tool provided is MySQL Workbench | PgAdmin is provided | |||
7. | It does not support partial, bitmap and expression indexes. | It supports all of these | |||
8. | It doesn’t provide support for Materialised views and Table inheritance. | PostgreSQL provides both of them. | |||
9. | SQL only support Standard data types. | It support Advanced data types such as arrays, hstore and user defined types. | |||
10. | SQL provides limited MVCC support ( in InnoDB) | Full MVCC support. |