Three tables connected with date fields at the same time this field changes make mistakes, prompt can't what the same value in the primary key index of what, but three new records in the table when it's not a problem.

CodePudding user response:

This question, you feel is to say the right, we were confused about the spectator,
Three tables are linked together, how even modify how changes at the same time, you don't put you when the fairy, choke refers to a calculate to know,