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The app requires users to enter their social security number. The app should only display the last four digits when the user tabs to a different column.
Alsfo from ChatGpt: the correct option is D. Power Fx. Power Fx is a low-code programming language for expressing logic across the Microsoft Power Platform. It is used in canvas apps to create and manipulate data, control behavior, and do a lot more. In this case, you can use Power Fx to create a formula that masks the Social Security Number and only displays the last four digits when the user tabs to a different column. The other options are not suitable for this specific requirement. Business rules and business process flows are used for enforcing and guiding users through business processes, while Power BI DAX is used for data analysis in Power BI.
To achieve the functionality where the app only displays the last four digits of the social security number when the user tabs to a different column, you should use **Power Fx** (Option D).
Power Fx is the formula language for canvas apps in Power Apps, and it allows you to manipulate and format data dynamically. You can use it to create a formula that masks the social security number except for the last four digits.
Using Power Fx to directly manipulate the display of the last four digits of the social security number is a more straightforward and appropriate approach for this specific requirement.
In the scenario described, where you want to display only the last four digits of a social security number when the user tabs to a different column, using a business rule might be an over-complication. Business rules usually deal with actions like showing/hiding fields, setting default values, or validating data.
the "Business rule" option could be a valid choice in this context. Business rules in Power Apps can help enforce data validation, apply logic, and automate certain behaviours based on conditions. However, business rules are typically used for more complex scenarios that involve data validation and logic, rather than directly manipulating how data is displayed.
you can, scope is set to table. This is what you cannot do with business rules on a canvas app:
Differences between canvas and model-driven apps
Model driven apps can use all actions available on business rules, however not all business rule actions are available for canvas apps at this time. The following actions are not available on canvas apps:
Show or hide columns
Enable or disable columns
Create business recommendations based on business intelligence.
https://learn.microsoft.com/en-us/power-apps/maker/data-platform/data-platform-create-business-rule#differences-between-canvas-and-model-driven-apps
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