MARC meaning in Computing ?

MARC (machine-readable cataloging) standards are a set of digital formats for the description of items catalogued by libraries, such as books. Computerized library catalogs and library management software need to structure their catalog records as per a industry-wide standard, which is MARC, so that bibliographic information can be shared freely between computers. The structure of bibliographic records almost universally follow the MARC standard. Other standards work in conjunction with MARC, for example, Anglo-American Cataloguing Rules (AACR)/Resource Description and Access (RDA) provide guidelines on formulating bibliographic data into the MARC record structure, while the International Standard Bibliographic Description (ISBD) provides guidelines for displaying MARC records in a standard, human-readable form.