Relation algebra query that finds customer's who have a balance more than 1000, from deposit table is:
1
π balance > 1000 (σ customer_name(Deposit))
2
σ customer_name (π balance > 1000 (Deposit))
3
π customer_name (σ balance > 1000 (Deposit))
4
σ balance > 1000 (π customer_name (Deposit)