To be effective, it must be simple enough to communicate the required data structure to the end user, yet detailed enough that the database designer can create the physical structure.

为了是数据模型更加有效，它必须足够简单以使最终用户能够沟通必需的数据结构，同时它也要足够详细以使数据库设计人员能够创建物理结构。

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Required data: The required data section displays a list of required data that must be set into various configuration files to run this action. It can be divided into two parts

需要的数据：需要的数据部分显示了一系列需要的数据，这些数据在各种配置文件中必须得到设置以运行该操作。

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In Canada, a conformance strength of Populated has been adopted to fill a gap between Required and Mandatory, representing an element that must be supported with data (it cannot be empty).

在加拿大，已经采用Populated的一致性强度来填补了Required和Mandatory之间的空白，其表示必须使用数据支持的元素(其不能为空)。

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To protect against that, the law required that when investment managers give advice it must be based on either "unbiased" computer models or a "level-fee" arrangement where advisers aren't paid based on the investments participants buy.

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It is believed that three consultants will be required to review a case and all must agree for a termination to proceed.

BBC: Irish cabinet reaches agreement on abortion bill

One 2011 listing that got city lawmakers' attention it required that applicants for an opening as a New York legal secretary "must be currently employed" was mistakenly written that way, said William Alcott, a lawyer for the firm that posted it, McGuireWoods LLP.

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