In DB2, what is the role of the compression dictionary in data compression?
- Encrypting data to enhance security
- Improving query performance by indexing compressed data
- Increasing data redundancy for fault tolerance
- Reducing storage space by storing frequently used values in a separate dictionary
The compression dictionary in DB2 helps in reducing storage space by storing frequently used values in a separate dictionary. This dictionary stores repetitive values, allowing for more efficient data compression.
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