# Question: Suppose that a B tree index on branch city is available on

Suppose that a B + - tree index on branch-city is available on relation branch, and that no other index is available. List different ways to handle the following selections that involve negation?

a. σ ¬ ((branch-city <“Brooklyn”)(branch)

b. σ ¬ (branch-city=“Brooklyn”)(branch)

c. σ ¬ ((branch-city <“Brooklyn” ∨ assets<5000)(branch)

a. σ ¬ ((branch-city <“Brooklyn”)(branch)

b. σ ¬ (branch-city=“Brooklyn”)(branch)

c. σ ¬ ((branch-city <“Brooklyn” ∨ assets<5000)(branch)

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