Pages
Database applications view data as:
- a collection of records (tuples)
- records can be accessed via a
TupleId
(aka RecordId or RID)
-
TupleId = (RelId + PageNum + TupIndex)
The disk and buffer manager provide the following view:
- data is a sequence of fixed-size pages (aka "blocks")
- pages can be (random) accessed via a
PageId
- each page contains zero or more tuple values
Page format = how space/tuples are organised within a Page.
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