Consider the bank database of Figure 15.14, where the primary keys are underlined.Suppose that a B+-tree index on branch city is available on relationbranch, and that no other index is available. List different ways to handle thefollowing selections that involve negation:a. σ¬(branch city<“Brooklyn”)(branch)b. σ¬(branch city=“Brooklyn”)(branch)c. σ¬(branch city<“Brooklyn” ∨ assets<5000)(branch)

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