In DBMS, pages are managed in memory by buffer manager or managed on disk by the disk space manager. Unit of accesses to physical disk is the page.
See also: Relationship Between Database Page and OS Page
Page header
Header used to keep track of records in the page.
Header may contain fields:
- Number of records in the page
- Pointer to segment of free space in the page
- Bitmap indicating which parts of the page are in use