IF EXISTS (SELECT name FROM master.dbo.sysdatabases WHERE name = N'ca21db')
BEGIN
BACKUP DATABASE [ca21db] TO  DISK = N'D:\fes\ca21sql\backup\instsqlbackup.bak' WITH  INIT ,  NOUNLOAD ,  NAME = N'ca21db バックアップ',  NOSKIP ,  STATS = 10,  NOFORMAT 
DROP DATABASE [ca21db]
END

IF NOT EXISTS (SELECT name FROM master.dbo.sysdatabases WHERE name = N'ca21db')
CREATE DATABASE [ca21db] ON (NAME = N'ca21db_Data', FILENAME = N'D:\fes\ca21sql\data\ca21db_Data.MDF' , SIZE = 100, FILEGROWTH = 10%) 
LOG ON (NAME = N'ca21db_Log', FILENAME = N'D:\fes\ca21sql\data\ca21db_Log.LDF' , SIZE =50, FILEGROWTH = 10%)
GO