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  ______     ___      _____    __   __    ______  
 /_   _//   / _ \\   / ____||  \ \\/ //  /_   _// 
   | ||    / //\ \\ / //---`'   \ ` //   `-| |,-  
  _| ||   |  ___  ||\ \\___      | ||      | ||   
 /__//    |_||  |_|| \_____||    |_||      |_||   
 `--`     `-`   `-`   `----`     `-`'      `-`'

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