tables with same structure

hi , i have 4 tables with same structure

person1 {name family nationalcode , … }
person2 {name family nationalcode , … }
person3 {name family nationalcode , … }
person4 {name family nationalcode , … }person2 is detail of master1 and person4 is detail of master3how to do this?is it possible to use only 1 table Instead of 4 table?

It depends on how you use your tables. If the different tables are for different users only, you should put the data under a single table and use the User ID Security feature instead to avoid redundancy.