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.
After a long time of retrieval practice, CALIS unioncatalog 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。
3
The paper introduces the OAI-PMH protocol, then constructs the UnionCatalog 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。