If a database query returns all customer records where the 'city' field is either 'New York' OR 'Los Angeles', which set theory operation models this?

💡 Explanation

The query models a set union because it returns records belonging to either the set of customers from 'New York' or the set of customers from 'Los Angeles', therefore combining both sets. It's a union, rather than intersection which would only return customers in both cities.

• A robotic arm executes a sequence of movements. Positional error accumulates with each step. Which strategy best stabilizes the arm's trajectory?
• A robotic arm with three joints needs to reach a specific point in space; the joint angles are linearly dependent. Which outcome occurs?
• A user wishes to prove they know a secret to a remote server without revealing the secret itself. Which mechanism confirms knowledge without disclosure?
• If a sorting algorithm method guarantees that elements preceding a 'pivot' are always less than the pivot, which consequence follows?
• Which outcome occurs when a network router's path selection uses a distance-vector routing algorithm with poisoned reverse?
• A data compression engineer implements Huffman coding for a text file, but the decoding process halts prematurely. Which consequence follows from incomplete transmission of the Huffman tree?