When retrieving data from a DynamoDB table, which operation allows you to use a partition key to narrow down results and retrieve only the items that match your specific criteria?
Lookup operation
Fetch operation
Query operation
Scan operation
A query operation in Amazon DynamoDB is the most efficient way to retrieve data by using a partition key (and an optional sort key) to narrow down the results to the items that match exactly what you're looking for. This operation finds items within a table or a secondary index using the primary key attribute values specified by you, leading to faster and more efficient data retrieval compared to a scan operation which reads every item in the table or index and can consume more read throughput, resulting in higher latency and cost.
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