... by going to folder C:\Users\user-name\AppData\Roaming\LibraryManagementSystem and copy the file librarydb.db to another location.
3.Uninstall the old version software.
4.Install the new version.
5.Restore the old database by going to Menu->Manage Database->Import Database and select old database file librarydb.db
Step 2 and 5 are needed only if you want the old bookdetails database available in the new version.All information used by the software is stored in this database.