Mixed iBase systems
The similarity in the user view of iBase operating with Microsoft Access and SQL Server database is intentional and real. You can operate iBase with a mixture of database types, even securing Access and SQL Server databases with the same security file.
When you want to migrate an Microsoft Access database or security file to SQL Server, by upsizing, you can do so in place, so that users need not see a difference until you choose to add features that are only available in SQL Server databases.