In DB2, an index is used to speed up ________ operations.
- Data deletion
- Data insertion
- Data modification
- Data retrieval
An index in DB2 speeds up data retrieval operations by providing a faster access path to the rows in a table. It organizes the data in a structured way based on the indexed column(s), allowing the database engine to quickly locate and retrieve the required data, thereby enhancing query performance. This is particularly useful in scenarios where there are large volumes of data to be queried frequently.
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