数据访问困难（difficulty in accessing data）。假设银行的某个高级职员需要找出所有居住在某个特定邮编地区的客户的姓名，于是他要求数据处理部门生成这样的一个列表。
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使用直接的方式访问数据中心越来越困难，有时候远程地执升级和安装是惟一可行的方法。
With physical access to data centers getting more and more difficult, doing upgrades and installs remotely is sometimes the only practical option.
缺乏数据库级别的安全模型使得充分利用 ZEO 存储服务器变得非常困难，因为客户端或多或少地拥有对数据库的自由访问，因此客户端必须受信任。
The lack of a database-level security model makes it difficult to fully leverage ZEO storage servers as clients have more or less unfettered access to the database and must therefore be trusted.
定义和应用业务规则(应该对数据进行定型)仍然非常困难，并且也很难提供虚拟化技术来让数据用户访问此构型。
It's still very difficult to define and apply the business rules that should shape the data and to provide the visualization technology to make that shape accessible to the users of the data.
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