The table types Doctor and Patient are defined as follows: Write down a sequence of Product, Rows, and Columns relational algebra statements which have the same effect as: TR = Join of Doctor, Patient...

The table types Doctor and Patient are defined as follows:

Write down a sequence of Product, Rows, and Columns relational algebra statements which have the same effect as:

TR = Join of Doctor, Patient on Doctor. Doctor No = Patient. Doctor No

Assume a natural join. Note the qualification of doctor No by table name to eliminate ambiguity over which doctor No attribute is being referenced.