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 _    _      ___      _____    _    _     ____    
| || | ||   / _ \\   |__  //  | || | ||  |  _ \\  
| || | ||  / //\ \\    / //   | || | ||  | |_| || 
| \\_/ || |  ___  ||  / //__  | \\_/ ||  | .  //  
 \____//  |_||  |_|| /_____||  \____//   |_|\_\\  
  `---`   `-`   `-`  `-----`    `---`    `-` --`

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發送短信 : Translating relational schema with constraints into OODB schema