access to any database
Let us point out one further aspect that is a direct consequence of the above principles. As the objective is universality, the documents that can be accessed by WWW browsers are not exclusively those specifically written to fit the WWW format. Users can also have access to any other kind of information or database. The browser will take care of masking any format and access method differences. Thus:
Any database, not only those specially prepared as WWW documents, may be accessed from and presented via standard WWW client systems. It is therefore not necessary to rewrite existing information bases to make them available through www.
What is the difference from a user’s point of working in that mode? First, the displayed information will in general not contain visible anchors, and it will not be possible to browse further. Second, the WWW interface will generally not offer the same rich search opportunities as the database system itself.
Access to any existing database is an important factor of the WWW’s success. In particular, all administrative detabases, such as corporate telephone files, may be directly accessible, unchanged, via the unique interface of the WWW browsers.
5 the support of transactions
An essential feature of the Word Wide Web technology is the support of transactions. That is, users may not only passively consult documents. They may also input information to remote systems. The mechanism which supports remote transactions is based on forms that the user is invited to fill out. Transactions are used in a number of fields including distance education, or administrative information servers. But the main use is in commerce. Networked advertising, home shopping, or ticket ordering are applications of commercial transactions widely used through the www.
Let我们指出是上述原则的一种直接后果的一更深远的一面。 因为宗旨是普遍性，可以由万维网浏览器访问的本文不完全是明确地书面的那些适合万维网格式。 用户能也得以进入对其他的信息或数据库。 浏览器照料掩没所有格式和存取方式区别。 因而：
Any数据库，当万维网文件特别地准备的不仅那些，也许访问从和通过标准万维网客户系统被提出。 重写现有的信息库做他们可利用的通过万维网因此是不必要的。
What从user’s问题的区别的工作在那个方式下？ 首先，被显示的信息一般不会包含可看见的船锚，并且进一步浏览将是不可能的。 其次，万维网接口通常不会提供富有的查寻机会和数据库系统一样。 对所有现有的数据库的Access是WWW’s成功的一个重要因素。 特别是，所有行政detabases，例如公司电话归档，也许是直接可访问的，未改变，通过万维网浏览器的独特的接口。
5交易支持 词宽网技术的An本质特征是交易支持。 即用户也许被动地不仅咨询文件。 他们也许也输入信息到远程系统。 支持遥远的交易的机制根据用户被邀请填好的形式。 交易用于一定数量的领域包括远程教育或者管理信息服务器。 但是主要用途在商务。 网络做广告，家庭购物或者票预定是交易的应用用途广泛通过万维网。本回答被网友采纳
