What is a query in MySQL? Explain how queries help in managing database records.

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A query is a command given to a MySQL database to work with data — to add, search, update, or delete information — written using SQL statements. Queries help manage database records by allowing users to retrieve exactly the information they need (using SELECT with WHERE), modify existing records (using UPDATE), remove unwanted records (using DELETE), and add new ones (using INSERT), all without manually searching through the entire table.