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33 lines
978 B
SQL
33 lines
978 B
SQL
--
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-- Database: test
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--
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--
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-- address --> city --> country
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--
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CREATE TABLE `country` (
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`country_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT,
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`country` varchar(50) NOT NULL,
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PRIMARY KEY (`country_id`)
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) ENGINE=InnoDB;
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CREATE TABLE `city` (
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`city_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT,
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`city` varchar(50) NOT NULL,
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`country_id` smallint(5) unsigned NOT NULL,
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PRIMARY KEY (`city_id`),
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KEY `idx_fk_country_id` (`country_id`),
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CONSTRAINT `fk_city_country` FOREIGN KEY (`country_id`) REFERENCES `country` (`country_id`) ON UPDATE CASCADE
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) ENGINE=InnoDB;
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CREATE TABLE `address` (
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`address_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT,
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`address` varchar(50) NOT NULL,
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`city_id` smallint(5) unsigned NOT NULL,
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`postal_code` varchar(10) DEFAULT NULL,
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PRIMARY KEY (`address_id`),
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KEY `idx_fk_city_id` (`city_id`),
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CONSTRAINT `fk_address_city` FOREIGN KEY (`city_id`) REFERENCES `city` (`city_id`) ON UPDATE CASCADE
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) ENGINE=InnoDB;
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