If your project is in development, late changes to the database schema could trigger significant code changes that jeopardize the timely delivery and quality of the deliverable, thus increasing cost.

如果您的项目处于开发阶段，今后更改数据库架构可能会导致巨大的代码更改，从而阻碍可交付结果的及时交付并降低质量，进而增加成本。

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Controlling and updating the scope, cost, budget, schedule and quality requirements based upon approved changes, by coordinating changes across the entire project.

根据批准的变更控制与更新范围、费用、预算进度和质量要求，协调整个项目的变更。

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The change of project refers the changes of contract caused by the modification of design document or technical specifications, which has great impact on the work of project cost management.

工程变更是指由于设计文件或技术规范修改而引起的合同变更，它对工程造价管理工作有较大的影响。

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