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所以是 PostgreSQL
Database Management System
★ 17.2K Database License: PostgreSQLPostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
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所以是 MariaDB
Community-developed open SQL server
★ 5.9K Database License: GPL-2.0MariaDB was designed as a drop-in replacement of MySQL(R) with more features, new storage engines, fewer bugs, and better performance.