K Fold Validation on Already Splitted Data Set

Question

I have a data set of adultSalaries in excel sheets training sheet and testing sheet separately. According to my knowledge we use k fold validation to split the data set into training and testing. As in my case the data i got is already been splitted in training and testing. does i still use k fold validation? if i use k fold validation then how could i further split the data?

Answer 1

Since Next js is working in server less architecture, you need to persist/save data some where like DB on the time of posting data, Then only we an retrieve data by get Api