Saving Changes is not permitted.The changes you have made require the following tables to be dropped and recreated..Sql Server 2008 Management Studio Express Error
If you have just installed Sql Server 2008 Express Edition and you have your default settings then you probably might get this error when your want to change some table and then save changes. In the default settings “Prevent Saving changes that require table recreation” is checked which prevents to save the changes which you make in the design of the table. So in this article i will talk less and give you a walkthrough on how to remove this ugly error and to keep it explanatory i will use images rather then simple text. So the error looks like this 
Now the stepwise solution is :-
- Click Cancel on this screen and then click OK on the next screen.
- On the top menu bar select the Tools option and inside tools select the Options menuitem.
3.Inside options select the “Designer” and in the designer context form “uncheck” the option which says “Prevent Saving changes which requires recreation”. 4.Click OK and you are done and now save changes to your table and your error should no vanish. 
Happy Programming!!!!!!!!!!!!
Unable to connect to Sql Server 2008 Express Edition Remotely using the IP and the named instance
If you are trying to connect your sql server 2008 express edition instance remotely and facing problems while connecting it although you have tried all the possible solutions in the book then the problem can be a really very silly thing and what’s that thing , i will describe it shortly. If you are getting the below mentioned error then there might be many reasons for that error. A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: TCP Provider, error: 0 - A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.) (.Net SqlClient Data Provider) So in the list of probable reasons is :-
- Check if the sql server 2008 express edition service and sql server browser services are running or not, if not then please run them first.
- First check whether TCP/IP is enabled in the Sql Server Configuration Manager Tool and select the instance of sql server 2008 express edition for that, if not enabled enable it.
- If TCP/IP is enabled then check your firewall settings open two ports 1433 and 1434 on the firewall, generally 1433 is meant for Sql server and 1434 is meant for sql server browser. 1433 is TCP port and 1434 is UDP port
- The silly mistake which happens when working with sql server 2008 express edition is that by default it runs on dynamic ports so you can’t run it remotely with all the above configuration and it will lead to frustration.So what to do then, the solution is just go to properties of the TCP/IP and in the TCP Port just give whatever port you want your sql server to be run on.That will do the trick for you.
- After doing the port settings now check the firewall rules and open the respective ports which you have just configured and your sql server instance will run remotely.
Happy Programming!!!!!!!!!!!!!!!!!!!!
Can't Uninstall SQL Server 2005 Express Tools:- Error while installing Sql Server Management Studio Express 2008
The SQL Server 2005 Express Tools are installed. To continue, remove the SQL Server 2005 Express Tools. If you are getting the above error while installing Sql Server Management Studio 2008 then probably you might try the below given solutions one by one to fix this error. I m not certain what will work for you but i have added all the options which i found after spending some time on the net which various people have given and for me the most common one worked which also i have listed below.
- Rename the key “HKLMSOFTWAREMicrosoftMicrosoft SQL Server90”. This worked for me i renamed the whole folder to “old” and then the installation started passing all the test. For x64 Windows Server 2008, the reg key needed is: “HKLMSOFTWAREWow6432NodeMicrosoftMicrosoft SQL Server90” ( Thanks to adam).
Once Sql server Management Studio is installed successfully, then restart your system sql server installation will automatically ask you for a restart. After restarting you will see that your sql server 2005 instance will stop working because you played with the 90 directory and if you try to rename old to 90 then the system will not allow you to do so as it already created an entry name 90 for you having “Tools” and “Shell”. So now we are in deep trouble what to do next, what i did was i again renamed the 90 entry which it created to 70 and the entry for sql server 2005 which we renamed as old, again back to 90 and voila everything works fine now. Both sql server installations are running side by side and both management studios are also running side by side anyways we can open old database in SSMS 2008 so there is no need to have SSMS 2005 unless and until there is some special requirement. 
This was the hit and trial method and it worked for me for the first time but i would not suggest this method to be done on any full fledged install although you may test this on your virtual pc or vmware installation as it might corrupt your sql server 2005 installation in some cases. 2.Try uninstalling any redgate products if you have installed any especially Red Gate Sql Prompt, this also caused issues to some users. 3.Try uninstalling sql server Management Studio 2005 before installing SSMS 2008 Above listed three ways will do the task for you, if you have resolved the problem in some other easy and concrete way then please do post your comment. Happy Programming!!!!!!!!!!!!!!