High-efficiency deduplication module of a database-management system

A method for high-efficiency deduplication of a database-management system, the method comprising:

• a deduplicating module of a database-management system receiving a user request that identifies a record stored in the database and an updated data value to be written to the record;
• the deduplicating module, in response to the receiving, identifying a first logical block that stores the updated data value identified by the user request;
• the deduplicating module further identifying a second logical block that stores, on a storage device of the set of database storage devices, an existing data value comprised by the record;
• and
• the deduplicating module associating the first logical block and the second logical block with a same physical block.

A computer program product, comprising a computer-readable hardware storage device having a computer-readable program code stored therein, said program code configured to be executed by a processor of a computer system to implement a method for a high-efficiency deduplication module of a database-management system, the method comprising:

• a deduplicating module of a database-management system receiving a user request that identifies a record stored in the database and an updated data value to be written to the record;
• the deduplicating module, in response to the receiving, identifying a first logical block that stores the updated data value identified by the user request;
• the deduplicating module further identifying a second logical block that stores, on a storage device of the set of database storage devices, an existing data value comprised by the record;
• and
• the deduplicating module associating the first logical block and the second logical block with a same physical block.