HiRDB uses global buffers to manage database input/output processes. This section explains the HiRDB database access processing method that uses global buffers. HiRDB provides the following facilities to improve the performance of the database access processing method:

• Global buffers
• In-memory data processing
• Prefetch facility
• Asynchronous READ facility
• Deferred write processing
• Facility for parallel writes in deferred write processing
• Incorporation during commit
• LRU management of global buffers
• Page access using the snapshot method
• Local buffers
• Global buffer pre-writing
• BLOB data file I/O facility
• Partial update or retrieval of BLOB or BINARY data
• Locator facility

Organization of this section

6.8.1 Global buffers

6.8.2 In-memory data processing

6.8.3 Prefetch facility

6.8.4 Asynchronous READ facility

6.8.5 Deferred write processing

6.8.6 Facility for parallel writes in deferred write processing

6.8.7 Incorporation during commit

6.8.8 LRU management method for global buffers

6.8.9 Accessing pages using the snapshot method

6.8.10 Global buffer pre-writing

6.8.11 Local buffers

6.8.12 BLOB data file output facility

6.8.13 Partial update or retrieval of BLOB or BINARY data

6.8.14 Locator facility