To find out all accounts with privileges, you can query each of the system catalog views and combine the results together using the UNION operator, as shown in Listing 4.
要查明具有特权的所有帐号，可以查询每个系统编目视图并使用UNION操作符将结果组合在一起，如清单4所示。
After a long time of retrieval practice, CALIS union catalog database generally has 21 kinds of duplicate data types.
经过长期的检索实践发现，CALIS书目数据库大致有21种重复数据类型。
The paper introduces the OAI-PMH protocol, then constructs the Union Catalog of Universities of Shanxi Province based on OAI-PMH, and gives the detailed discussion of integral part.
本文在介绍OAI - P MH协议的基础上，构建了基于OAI - P MH协议的山西省高校联合目录，并对其组成部分进行了详细探讨。
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