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Серед поданих команд виберіть вірно записану команду для створення зовнішнього ключа таблиці
CREATE TABLE tovar (codshp` INT , nameshp VARCHAR(45) NOT NULL, PRIMARY KEY (codshp))
CREATE TABLE tovar (codshp` INT NOT NULL, nameshp VARCHAR(45) NOT NULL, FOREING KEY (codshp))
CREATE TABLE sales (codid INT NOT NULL, codtov INT NOT NULL, vart DECIMAL(10,2) NOT NULL, PRIMARY KEY (codid), CONSTRAINT codtov FOREIGN KEY (codtov) REFERENCES katalog (cod) ON DELETE NO ACTION ON UPDATE NO ACTION)
CREATE TABLE tovar (codshp` INT NOT NULL, nameshp VARCHAR(45) NOT NULL, PRIMARY KEY (codshp) REFERENCES katalog (cod))
CREATE TABLE tovar (codshp` INT , nameshp VARCHAR(45) NOT NULL, FOREING KEY (codshp))
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