对SQL
不太熟悉我有以下表格:
CREATE TABLE AUTHORS (
AuthorID INT NOT NULL,
AuthorFirstName VARCHAR(45) NULL,
AuthorLastName VARCHAR(45) NULL,
AuthorCountry VARCHAR(45) NULL,
PUBLISHERS_PublisherID INT NOT NULL,
PRIMARY KEY (AuthorID, PUBLISHERS_PublisherID),
INDEX fk_AUTHORS_PUBLISHERS1_idx (PUBLISHERS_PublisherID ASC),
CONSTRAINT fk_AUTHORS_PUBLISHERS1
FOREIGN KEY (PUBLISHERS_PublisherID)
REFERENCES dbo.PUBLISHERS (PublisherID))
该表没有错误,但下表是REFERENCES AUTHORS (AuthorID)
CREATE TABLE BOOKS (
ISBN INT NOT NULL,
SeriesName VARCHAR(45) NULL,
Title VARCHAR(45) NULL,
AuthorID INT NULL,
PublicationDate DATE NULL,
Publisher VARCHAR(45) NULL,
AUTHORS_AuthorID INT NOT NULL,
Series_SeriesName VARCHAR(45) NOT NULL,
Series_AuthorID INT NOT NULL,
PRIMARY KEY (ISBN, AUTHORS_AuthorID, Series_SeriesName, Series_AuthorID),
CONSTRAINT fk_BOOKS_AUTHORS1
FOREIGN KEY (AUTHORS_AuthorID)
REFERENCES AUTHORS (AuthorID)
CONSTRAINT fk_BOOKS_Series1
FOREIGN KEY (Series_SeriesName , Series_AuthorID)
REFERENCES SERIES (SeriesName , AuthorID))
我确定我需要修理或添加一些东西,但我不确定是什么,谢谢。
参见我的ERD图