database - Microsoft access validation -


i need allow only alphanumeric characters entered field. data type 'short text'.

what 'validation rule' using expression builder?

you can find lots of useful examples validation rules here:
http://allenbrowne.com/validationrule.html

in case -

digits , letters only

is null or not "*[!((a-z) or (0-9))]*"

accepts z , 0 9, no punctuation or other characters.


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