>>> first option:-


>> go to your terminal and enter the following command:-

>go to your current directory.

> then , python3.8 odoo-bin --addons=addons,(path of your module) --xmlrpc-port=1111 -d (enter your database name) i- (enter your module name)

> you type in the database name to create your new database.


>>> second option:-

>> first of all run your localhost (e.g >> localhost:1111)
>> then you go to following path:

            localhost:1111/web/database/manager
           
>> now you show the option of "CREATE DATABASE"  
>> click on this option and you can create your fresh or new database.  

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Thank you

Geminate Consultancy Services