In this step, you can decide if you want to use an existing database or create a new database. In both cases, you need to enter the name of the database into the appropriate field.
In case you are using an existing database, you can choose if you want to Create Kentico CMS database objects. If the existing database already contains Kentico CMS objects (tables, stored procedures, views), you need to uncheck the box. If the database does not contain these objects (typically when you are installing into an empty database), you need to leave the option enabled.