Yes Alter/ or modifying can be done ,

But not to System DataBases

Finnaly the Problem was solved by rebuilding.

while installing the Sql- Server it will asl of Collation "Case- Insensitive", this was to be set corectly. To avoid the Issues mentioned above.

Thanks...

hI AFTER RUNNING

select serverproperty ('Collation') THIS I GOT THE RESULT AS

SQL_Latin1_General_CP437_BIN

IS THERE ANY WAY WE CAN ALTER THIS