MARC 21 MARC 21 (ISO 2709) Strengths:
{"Image DocumentName": "MARC 21 MARC 21 (ISO 2709) Strengths:", "Image ImageDescription": "ISO 2709-based metadata communications protocol. Choice of two character encoding options: MARC 8 (ASCII, ANSEL, selected ISO, EACC) Unicode (limited to equivalents of MARC 8 repertoire) XML expression is now also an option. Maintenance agency: Library of Congress w/ NLC, BL. Strengths: Well-maintained, mature standard. Widely adopted by library communities. Large universe of MARC 21 records available. Wide choice of software vendors. Weaknesses (in the present & future): Virtually unused outside of libraries. Limits on field and record size. Restricted range of scripts supported. Limited ability to convey complex relationships, hierarchy, attributes at tag/subfield level. MARC 21 is well known to all of you, but it may be helpful to review some key points and new developments before looking at non-MARC standards. More info:", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}