DBMS Parameters (cont)
Typical DBMS/table parameter values:
| Quantity |
| Symbol |
| E.g. Value |
| total # tuples |
| r |
| 106 |
| record size |
| R |
| 128 bytes |
| total # pages |
| b |
| 105 |
| page size |
| B |
| 8192 bytes |
| # tuples per page |
| c |
| 60 |
| page read/write time |
| Tr ,Tw |
| 10 msec |
cost to process
one page in memory |
| - |
| ≅ 0 |
|
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