What is the unique numeric identifier assigned to each published book edition for ordering and cataloging?

What is the unique numeric identifier assigned to each published book edition for ordering and cataloging?

• A. ISBN (International Standard Book Number)
• B. Dewey Decimal System
• C. Metadata
• D. Interlibrary Loan (ILL)

Answer: (A)

The main concept is how books are identified for ordering and cataloging. The ISBN, or International Standard Book Number, is a unique numeric code assigned to each published edition and format of a book. Because different editions and formats (hardcover, paperback, e-book) get their own ISBN, bookstores, libraries, and distributors can order and catalog the exact version they need without confusion. This standardization keeps inventories precise and records reliable. By contrast, the Dewey Decimal System classifies books by subject and helps locate them in a library, not identify a specific edition. Metadata is descriptive information about a resource, not the unique edition-drawing code itself. Interlibrary Loan is a borrowing service, not a way to identify a particular book edition. So the unique numeric identifier used for ordering and cataloging each edition is the ISBN.

The main concept is how books are identified for ordering and cataloging. The ISBN, or International Standard Book Number, is a unique numeric code assigned to each published edition and format of a book. Because different editions and formats (hardcover, paperback, e-book) get their own ISBN, bookstores, libraries, and distributors can order and catalog the exact version they need without confusion. This standardization keeps inventories precise and records reliable. By contrast, the Dewey Decimal System classifies books by subject and helps locate them in a library, not identify a specific edition. Metadata is descriptive information about a resource, not the unique edition-drawing code itself. Interlibrary Loan is a borrowing service, not a way to identify a particular book edition. So the unique numeric identifier used for ordering and cataloging each edition is the ISBN.