What is the difference between a rule-based optimizer and a cost-based optimizer?
Answer to relevant QuestionsWhat are optimizer hints and how are they used?What indexes should you create? Write the required SQL commands.Using Table 11.4 as an example, create two alternative access plans. Use the following assumptions: a. There are 8,000 employees.b. There are 4,150 female employees.c. There are 370 employees in area code 615.d. There are ...What indexes would you recommend for the query you wrote in Problem 30, and what SQL commands would you use?Define the term heartbeat in an HDFS and explain its purpose.
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