For an project, I need to migrate an Access database to SQL server 2012 express, I found some ways to do this, like using Microsoft up-sizing, but this question is not very
Create a database on the SQL 2012 instance. Right click on that database and choose tasks/import data. Choose an access database as the source. edit the mappings so that it fits what you like, and import. The easiest way by far.
Microsoft provides a migration assistant for Microsoft Access 97 and higher to SQL Server 2005-2012 and Azure. See http://www.microsoft.com/en-us/download/confirmation.aspx?id=28763.
When You want to create/Edit a database diagram or Edit Table from a SQL SERVER 2008 R2 Client(SSMS 2008) to a SQL SERVER 2012 Instance, You will get the error shown as given below:
This backend version is not supported to design database diagrams or tables. (MS Visual Database Tools)
It seems that SQL Server 2008 R2 does not support SQL Server 2012 Database Diagram Table Modify. Solution: install SQL SERVER 2012 to access the functionality from the link below
http://www.microsoft.com/en-us/download/details.aspx?id=29062