But it is still often desirable to utilize these types of documents for purposes beyond simple viewing (such as indexing, compilation, pretty-printing, filtering, etc.).
但将这些类型的文档用于简单查看之外的用途(如建立索引、编译、以良好格式打印、过滤等)通常还是比较理想的。
An operational database is designed and tuned from known tasks and workloads, such as indexing and hashing using primary keys, searching for particular records, and optimizing "canned" queries.
操作数据库是为已知的任务和负载设计的,如使用主关键字索引和散列,检索特定的记录,和优化“罐装的”查询。
It is not uncommon for applications to be written in such a way as to cause frequent or even constant indexing, and as the load of users and data increases, the indexing work gets harder and harder.
通常很少会以导致频繁甚至持续的索引的方式来编写应用程序,并且随着用户和数据负载的增加,索引工作会变得越来越难。
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