In a data dictionary, how can data integrity for the ADMISSION_DATE be better assured?

A data dictionary serves as a detailed reference tool that defines the structure and content of data elements, helping to ensure that all data is consistent and reliable. When considering how to better assure data integrity for the ADMISSION_DATE field, having a well-defined template is crucial.

Defining a template for ADMISSION_DATE means specifying the format in which the date should be entered (for example, MM/DD/YYYY). This specification ensures that all entries are made in a consistent manner, which is important for maintaining the validity and accuracy of the data. If a standard format is defined, it reduces the likelihood of errors that can occur from different date formats, such as confusion between day and month, or incorrect entries altogether.

Furthermore, a well-defined template can incorporate rules for acceptable values, such as preventing dates that are far in the future or the past, which may not make sense in the context of admissions. This helps maintain both the quality and integrity of the data by ensuring that it meets predefined criteria.

In contrast, merely having a numeric data type does not alone guarantee integrity since integrity can also depend on correct formatting and context. If the field is not required, missing data could lead to incomplete records and make it difficult to track admissions accurately. Similarly, increasing the field