An execution plan, also known as a query plan, is a detailed sequence of steps a database system uses to execute a query. It outlines how the database will access tables and indexes, what join algorithms it will use, and in what order operations will be performed. Analyzing execution plans is crucial for database administrators and developers to optimize query performance by identifying bottlenecks, inefficient operations, and missing indexes. Tools are available in most database systems to visualize and analyze these plans.
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