To tackle issues related to metadata and improve discovery of and access to digital resources, National Information Standards Organization (NISO) has developed a series of standards and recommended best practices. The impact of these standards has been discussed in depth. However, no research has been done in the areas of how those standards and best practices can be used for digital resources in Chinese, and strategies for implementing those standards. This paper aims to identify common issues in discovery of and access to Chinese digital resources; suggest feasible solutions; discuss how to leverage NISO standards and recommended practices; and recommend ways to promote the standards and best practices to stakeholders.

Article in Chinese. [Purpose/significance] This paper discusses standards development for library demand driven acquisitions and introduces the Demand Driven Acquisition of Monographs (NISO DDA), a recommended practice published by the National Information Standards Organization (NISO) in United States.Libraries in China may draw on U.S. experience during their own DDA application and standards development.[Method/process] Through a literature review, this paper discusses the NISO DDA development background, process, key aspects, impact, and the challenges.[Result/conclusion]NISO DDA laid the foundation for the standardization and sustainable development of DDA. It provides guidelines for the standardized adoption and promotion of DDA on the basis of win-win cooperation by various stakeholders such as libraries, publishers, vendors, and aggregators. It has a positive impact on protecting the interests of all stakeholders in the book supply chain. The sustainable development of DDA continues to face challenges; various stakeholders are still actively exploring the ways in which DDA can be further developed.

In January 2000, the University of California created the Shared Cataloging Program (SCP). Based at the University of California, San Diego, the SCP is a “centralized cataloging model” for the California Digital Library consortium collections. This article will take an evolutionary look at the perpetual challenges of sustaining a consortial cataloging model and highlight the efforts of the SCP in the ongoing quest to eliminate the redundancy of efforts by centralizing the optimization of cataloging efficiency.

The presentation discussed the current and potential issues we faced with electronic resources, especially Chinese e-resources like ebooks from Apabi, which filed bankruptcy (and we've bought a lot of books there!), and databases from CNKI, which are suspended until further notice due to government audits. Brings up a lot of questions on how to handle these situations from perpetual access rights in licensing terms to safeguard plans for preservation and activating perpetual access.