Creating a database with MySQL Workbench from existing schema/model

This for mysql workbench version 6.0 and for exporting a schema.

Select tab MySQL Model
Select File->Export->Forward Engineer SQL Create

Place a file name to be exported in the Output SQL Script File, choose your options, next

Export MySQL table Objects,  
filter tables 

Then a file is created which you can import to your database and it creates schemas if not exists, creates tables if not exists.

In the case of models, you need to pay, many bucks, for a tool that creates schemas, tables, indexes, cascading, and all stuff associated to an existing data model.