DBMS Parameters
Our view of relations in DBMSs:
- a relation is a set of r tuples, with average size R bytes
- the tuples are stored in b data pages on disk
- each page has size B bytes and contains up to c tuples
- data is transferred disk↔memory in whole pages
- cost of disk↔memory transfer Tr , Tw dominates other costs
![[Diagram:Pics/file-struct/file-struct0.png]](Pics/file-struct/file-struct0.png)
|
![[prev]](icon/prev.gif){kind=icon}
![[next]](icon/next.gif){kind=icon}