Which format is a standard digital description of items in a library collection?

Which format is a standard digital description of items in a library collection?

• A. MARC
• B. OPAC
• C. LCC
• D. LCSH

Answer: (A)

MARC is the standard machine-readable format for bibliographic records that describe items in a library collection. It provides a consistent, tagged structure for essential information such as title, author, publication details, and subject terms, so library systems can store, exchange, and display records reliably. In MARC records, fields use numeric tags (like 245 for title, 100 for author, 260/264 for publication, 650 for subject terms) and subfields to organize data, making it easy for catalogs and interlibrary loan systems to interpret records across different libraries and platforms. This machine-readable format is what lets librarians catalog items once and share those records widely, enabling search and retrieval in catalogs and databases. OPAC refers to the online catalog interface users interact with, not the data format. LCC is a classification system that organizes books by topics, and LCSH is a controlled vocabulary for subject indexing. None of these describe the data format itself, whereas MARC does.

MARC is the standard machine-readable format for bibliographic records that describe items in a library collection. It provides a consistent, tagged structure for essential information such as title, author, publication details, and subject terms, so library systems can store, exchange, and display records reliably. In MARC records, fields use numeric tags (like 245 for title, 100 for author, 260/264 for publication, 650 for subject terms) and subfields to organize data, making it easy for catalogs and interlibrary loan systems to interpret records across different libraries and platforms. This machine-readable format is what lets librarians catalog items once and share those records widely, enabling search and retrieval in catalogs and databases.

OPAC refers to the online catalog interface users interact with, not the data format. LCC is a classification system that organizes books by topics, and LCSH is a controlled vocabulary for subject indexing. None of these describe the data format itself, whereas MARC does.