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什么是目录服务呢?目录就象一个数据库,但更趋向于说明及属性信息。通常目录中的信息被读出的概率远大干被写入的概率,因而目录不安装复杂事务和回滚(roll-back)事务。目录修复是一项完整事务,要么全部目录的有关信息全都改变,要么都保持不变。目录对查询可做出快速反应,它们可广泛地复制信息以增强可靠性、缩短响应时间。当目录信息被复制以后,临时目录和原目录完全一致并同步。提供目录服务的途径有多种,但
What is a directory service? Directory is like a database, but tends to explain and attribute information. Usually the probability of the information in the directory being read out is much higher than the probability of being written, so directories do not have to install complex transactions and roll-back transactions. Directory repair is a complete transaction, or the entire directory of all relevant information changes, or both remain unchanged. Queries quickly respond to queries by replicating information extensively to increase reliability and reduce response time. When the directory information is copied, the temporary directory and the original directory exactly the same and synchronized. There are many ways to provide directory services, however