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Database Systems 6th Edition by Ramez Elmasri, Shamkant B. Navathe
Edition 6ISBN: 0136086209Database Systems 6th Edition by Ramez Elmasri, Shamkant B. Navathe
Edition 6ISBN: 0136086209 Exercise 2
Figure 18.8-Compare the cost of two different query plans for the following query:
salary > 40000 select (EMPLOYEE |X| DNO=DNUMBER DEPARTMENT)
Use the database statistics in Figure 18.8
Explanation
Verified
Verified
One plan might be for the following quer...
Database Systems 6th Edition by Ramez Elmasri, Shamkant B. Navathe
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