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  • ManyToOne : N VS 1 관계
  • OneToMany : 1 VS N 관계
  • ManyToMany : N VS N 관계

ManyToOne

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ManyToOne

draw.io Diagram
bordertrue
viewerToolbartrue
fitWindowfalse
diagramNamemanytoone
simpleViewerfalse
width600
diagramWidth475
revision3
Image Removed




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titleDDL

CREATE TABLE `group_info` (
  `group_id` int(11) NOT NULL AUTO_INCREMENT,
  `namevarchar(255) COLLATE utf8_bin DEFAULT NULL,
  PRIMARY KEY (`group_id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COLLATE=utf8_bin;
 
 
CREATE TABLE `user` (
  `user_id` int(11) NOT NULL AUTO_INCREMENT,
  `email` varchar(255) COLLATE utf8_bin DEFAULT NULL,
  `namevarchar(255) COLLATE utf8_bin DEFAULT NULL,
  `group_id` int(11) DEFAULT NULL,
  PRIMARY KEY (`user_id`),
  KEY `FKa36i4ekojwk70bxen390i6tek` (`group_id`),
  CONSTRAINT `FKa36i4ekojwk70bxen390i6tek` FOREIGN KEY (`group_id`) REFERENCES `group_info` (`group_id`)
) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

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