Salesforce Platform Developer Practice Exam

Which function can be used to verify that a zip code and state entered by users are correct?

1. REGEX

2. EXPRMATCH

3. ISNUMBER

4. VLOOKUP

The correct answer is: VLOOKUP

The function that is best suited for verifying that a zip code and state entered by users are correct is VLOOKUP. This function allows you to search for a specific value in a column and return a corresponding value from another column in the same row. For example, you could use VLOOKUP to check if a specific zip code corresponds to the correct state by referencing a table where zip codes are listed alongside their corresponding states. Using VLOOKUP, you can ensure that the combination of zip code and state entered by the user is valid by confirming that the specific zip code exists in your dataset and retrieves the appropriate state associated with it. This is particularly effective since the relationship between zip codes and states is stored in tabular form, making VLOOKUP a natural fit for this verification process. Other functions like REGEX could be used for validation against patterns, such as ensuring that a zip code is in the correct format, but they would not confirm if a zip code is associated with a valid state from a dataset. EXPRMATCH is not a standard function used for this purpose in Salesforce or similar platforms. ISNUMBER is useful for checking if a value is numeric but does not relate to verifying the validity of the combination of zip codes and states,