MySQL is a relational database management system. A relational database stores data in different tables instead of putting all data in one large warehouse, which increases speed and flexibility. The default port number of mysql is 3306, which can be modified by editing the .my.cnf file in the user directory.
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1. The default port of mysql is 3306, which can be edited Modify the .my.cnf file in the user directory;
2. The default port number of sqlserver is: 1433;
3. The default port number of oracle is: 1521;
4. The default port number of DB2 is: 50000;
5. The default port number of PostgreSQL is: 5432.
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