لدى مسألة ارجو المساعده في حلها

انا طالبة جامعية في قسم الكمبيوتر سينس.....ابتُليت في دكتورة لا تعرف في
data اي شيء

لدي مسألة ارجو ممن يستطيع مساعدتي ان لايبخل على

هذه هي المسألة :

Entity sets banks, branches, accounts and ATM cards. Bank names are unique. No bank has two branches with the same branch number.
No branch has two accounts with the same account number. No account has two ATM cards with the same ATM card number. However,
there can be ATM cards with the same number on different account; there can be accounts with the same number on different branches,
and there can be branches with the same branch number in different banks.
a) Draw an E/R diagram, indicating weak entity sets and the keys for the entity sets
Convert your diagram to a relational database schema, including all the constraints.