Data base (or database): any collection of data that is specially organized for

游客2025-04-26 26

问题 Data base (or database): any collection of data that is specially organized for rapid search and retrieval, usually by a computer. Databases are organized and integrated in such a way as to facilitate the accessing, manipulation, and deletion of data in conjunction with various data-processing operations.
The information in many databases consists of natural-language texts of documents. Information is retrieved from these computerized records based on the presence in them of words or short phrases that are identical to those posed in the user’s query. In a typical query, the user provides a sequence of characters, such as the title of a journal or the name of a subject area, and the computer searches in the database for a corresponding sequence of characters and provides the source materials in which those characters appear. Queries are the principal means by which users retrieve database information.

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答案数据库是指为了更快查询和获取信息而专门组织的数据资料收集，这一收集通常是由电脑完成的。数据库以易于数据的获取、操作、删除以及其他相关数据处理程序为准则而组织和合并。
许多数据库中的信息由文件的自然语言文本组成。信息根据各自在记录中的单词或者短语形式，从计算机化的记录中被提取出来，而这些单词或者短语又与使用者的查询输入一致。在一个代表性的查询中，用户提供一系列字符，例如期刊名称或者某一主题，电脑就会在数据库中搜索相应文字，提供包含用户所输入字符的原始资料。搜索请求是用户提取数据库信息的主要途径。

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