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  _  __    ______     _____   _    _             
 | |/ //  /_   _//   / ___// | || | ||   ____    
 | ' //    -| ||-    \___ \\ | || | ||  |    \\  
 | . \\    _| ||_    /    // | \\_/ ||  | [] ||  
 |_|\_\\  /_____//  /____//   \____//   |  __//  
 `-` --`  `-----`  `-----`     `---`    |_|`-`   
                                        `-`

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發送短信 : Roles in ORM: A suggested semantics