即使恰当且一致地定义了数据模型，缺少恰当的数据值完整性约束可能会导致质量和一致性问题。
Even if the data models are defined appropriately and consistently, a lack of appropriate integrity constraints for data values can lead to quality and consistency issues.
一致性：事务保持数据上定义的所有不变的属性(如完整性约束)。
Consistency: a transaction preserves all the invariant properties (such as integrity constraints) defined on the data.
在本节中，前面章节中描述过的使用XML schema和schematron的那些约束将被应用于医疗信息以确保正确性、完整性和一致性。
In this section, the constraints using XML Schema and Schematron described in the previous section are applied to healthcare information to ensure correctness, completeness, and consistency.
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