high cardinality

hi,

sorry for asking basic question 😔

i know about line item if dim table is more than 20% fact then search because of which char tha table size increased and make it as line item dimention 😊

and my doubt comes here wat is meant by cardinality is dat the total records in a dimention table????

i am rele sorry for asking basic questions 😔 plz plz plz do reply me