I’ve made a database with personsal information and I want to add a regular expression for zipcode/postalcode. Can someone explain how to do that?
Not sure what you are asking. What is your definition of “a regular expression”? Are you looking for an automatic way to populate a zip-code field - that would take some kind of an API into the Postal Service. Or, are you just looking to add a field to contain a zip-code - that could simply be a text field added to your database.
???