セクション 4. 章 10
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Challenge: Changing the Books Structure
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Your manager has decided that the books_table table should have an auto-incrementing book_id to uniquely identify each book. Additionally, the book_id will be set as the primary key for the table.
タスク
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You are tasked with recreating the books_table table with the following columns:
book_id- The unique id of the book (SERIAL),PRIMARY KEY;title- The title of the book (VARCHAR, max-length255),NOT NULL;author- The author of the book (VARCHAR, max-length100);genre- The genre/category of the book (VARCHAR, max-length50);published_year- The year the book was published (INTEGER);isbn- The International Standard Book Number (VARCHAR, max-length20);publisher- The publisher of the book (VARCHARof max-length100);pages- The number of pages in the book (INTEGER);language- The language of the book (VARCHARof max-length50);is_available- Whether the book is available for lending (BOOLEAN);
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セクション 4. 章 10
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