1 to 1 relationship -- Each record in parent table has only one match in the child table. 1 to many relationship -- Each parent record has one or more child records

you can read more in help. Try help set skip and help set relation

>Can anyone teach me how to decide it is 1 to many relation or 1 to 1 relation? how to decide which is parent table and which is child table? izzit only 2 type of relation ship in FoxPro?