Create MYSQL User and Dataabase

LOGIN AS ROOT
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morgan@server:~$ mysql -uroot -p
Password:

DELETE TEST DB/ TEST USER IF THEY EXIST
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mysql> DROP DATABASE IF EXISTS testdb;
Query OK, 0 rows affected (0,01 sec)

mysql> DROP USER IF EXISTS 'testdb_user'@'localhost';
Query OK, 0 rows affected (0,00 sec)

CREATE DB AND USER
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mysql> CREATE DATABASE testdb;
mysql> CREATE USER 'testdb_user'@'localhost' IDENTIFIED BY 'Aea13e456u($#iOiuzsdiut&IKZUg786';   | Make pw sufficiently long to avoid errors
mysql> GRANT CREATE,INSERT,DELETE,UPDATE,SELECT ON testdb.* TO 'testdb_user'@'localhost';        | Apply ususal rights to user.  User can't create other users.
mysql> FLUSH PRIVILEGES;
mysql> exit

TEST NEW USER ACCOUNT
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morgan@sqlserver:~$ mysql -utestdb_user -p
Enter password: 
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 33596
Server version: 5.7.34-log MySQL Community Server (GPL)

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mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| testdb             |
+--------------------+
2 rows in set (0,00 sec)