Table of Contents
Storing Data: Disks and File Organizations
Disks and Files
Why Not Store Everything in Main Memory?
Disks
Components of a Disk
Accessing a Disk Page
Arranging Pages on Disk
Disk Space Management
Buffer Management in a DBMS
When a Page is Requested ...
More on Buffer Management
Buffer Replacement Policy
DBMS vs. OS File System
Files of Records
Unordered (Heap) Files
Alternative File Organizations
Cost Model for Our Analysis
Assumptions in Our Analysis
Cost of Operations (I/O only)
Disk and File Summary
Disk and File Summary (Contd.)
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