Question: Figure 2 . Bank database. 3 ) Consider the Bank database of Figure 2 . What is the appropriate primary key for each relation? 4

Figure 2. Bank database.
3) Consider the Bank database of Figure 2. What is the appropriate primary key for each relation?
4) Consider the Bank database of Figure 2. Give a relational algebra expression to perform each of the following queries:
- Find the name of each branch located in Houston.
- Find the ID of each borrower who has a loan in branch Downtown
- Find the name of each borrower who has a loan in branch Downtown

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