發送短信

數:

提供者:

CAPTCHA:

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

Please enter what you see:

發送短信 : Relational to entity-relationship schema translation using semantic and inclusion dependencies