Database question

Problem 2: (20 points) however A bank has the following relations, whose mearings , that an account can have several owners (i.e. joint accounts Accounts(acctNo, type, balance) should be apparent, Note are allowed) Owns(acctNo, custNo) Customers(custNo, name, addr) Write the following in relational algebra. You may write complete expressions, or break your an into several steps by assigning intermediate relations to temporaries. a) Find the types of accounts held by customer "Lee b) Produce a table giving, for each type of account, the largest balance of any account of that type. For instance, if the result consists of the two tuples (checking, 2000) and (savings, 50000), then the largest checking account has a balance of 2000, and the largest savings account has a balance of 50000, and there are no other types of accounts