What is a Foreign Key?
What is a Foreign Key?
发布时间：2025-08-12 22:07:07
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答案：
refers to the PRIMARY KEY in another table.
CREATE TABLE Students ( /* Create table with foreign key - Way 2 */ ID INT NOT NULL PRIMARY KEY Name VARCHAR(255) LibraryID INT FOREIGN KEY (Library_ID) REFERENCES Library(LibraryID) );
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