Consider the following relation: Student(sid: integer,sname:…
Consider the following relation: Student(sid: integer,sname: varchar, age: integer, GPA: float, dept: varchar) sid is the primary key. Which of the listed choices is the best to speed up the query: select sname where gpa>3.0?
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For this problem show all work including: Formulas, substitution and algebra! At a local hospital a surgeon fills their schedule with hip and knee replacements. Each day this surgeon has enough time for 3 replacements in total; for the purpose of this problem, it takes the same amount of time to replace a hip joint and knee joint. a.) How many possible schedules can be created between hip and knee replacements for this surgeon? b.) If all possible daily schedules are equally likely what is the probability that the daily schedule consists exclusively of knee replacements? c.) What is the probability that the daily schedule starts with a knee replacement and ends with a hip replacement? d.) What is the probability that the schedule would not start with a knee replacement nor have 2 knee replacements in the same day?
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