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联合目录是资源共享、馆际互借、合作编目及合作馆藏发展的前提条件。本文简要介绍了集中式联机联合目录的四种模式 ,重点探讨了在此基础上发展而来的分布式虚拟联合目录及其国内外发展概况。
The joint directory is a prerequisite for sharing resources, interlibrary loan, cooperative cataloging and development of cooperative collections. This article briefly introduces the four modes of centralized online federated directories, and focuses on the distributed virtual federation directories and their developments both at home and abroad.