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-- Replace all MyDBs with the name of the DB you want to change its name
USE [MyDB];
-- Changing Physical names and paths
-- Replace all NewMyDB with the new name you want to set for the DB
-- Replace 'C:...NewMyDB.mdf' with full path of new DB file to be used
ALTER DATABASE MyDB MODIFY FILE (NAME = ' MyDB ', FILENAME = 'C:...NewMyDB.mdf');
-- Replace 'C:...NewMyDB_log.ldf' with full path of new DB log file to be used
ALTER DATABASE MyDB MODIFY FILE (NAME = ' MyDB _log', FILENAME = 'C:...NewMyDB_log.ldf');
-- Changing logical names
ALTER DATABASE MyDB MODIFY FILE (NAME = MyDB, NEWNAME = NewMyDB);
ALTER DATABASE MyDB MODIFY FILE (NAME = MyDB _log, NEWNAME = NewMyDB_log);