a. Assume no query size restriction and that a questioner knows that Dodd is a
female CS professor. Show a sequence of two queries that the questioner could use to
determine Dodd's salary.
b. Suppose there is a lower query size limit of 2, but no upper limit. Show a sequence
of queries that could be used to determine Dodd's salary.
c. Suppose that there is a lower and upper query size limit that satises Equation
with k = 2. Show a sequence of queries that could be used to determine Dodd's salary.
d. Suppose that there is a lower and upper query size limit that satises Equation
with k = 2 and query set overlap control with r=2. the sequence of queries issued by
user a is given below: state which all queries will get reject with reason.
1. count(M.cs.prof)
2. count(M)
3. count(cs.prof)
4. count(M. (cs.prof))Amrita Vishwa Vidyapeetham
Amrita School of Engineering, Amritapuri
Department of: Computer Science and Engineering
First Semester: M.Tech (CSE)
CS621:System Security
Tutorial 3, October 2014
1. Consider the table given below:
a. Assume no query size restriction and that a questioner knows that Dodd is a
female CS professor. Show a sequence of two queries that the questioner could use to
determine Dodd’s salary.
b. Suppose there is a lower query size limit of 2, but no upper limit. Show a sequence
of queries that could be used to determine Dodd’s salary.
c. Suppose that there is a lower and upper query size limit that satis?es Equation
with k = 2. Show a sequence of queries that could be used to determine Dodd’s salary.
d. Suppose that there is a lower and upper query size limit that satis?es Equation
with k = 2 and query set overlap control with r=2. the sequence of queries issued by
user a is given below: state which all queries will get reject with reason.
1. count(M.cs.prof)
2. count(M)
3. count(cs.prof)
4. count(M. (cs.prof))
Figure 1: statistical database
Greeshma Sarath
page 1 of 2
This question was answered on: Sep 21, 2023
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