(Solution) Amrita Vishwa Vidyapeetham Amrita School of Engineering, Amritapuri Department of: Computer Science and Engineering First Semester:Tech (CSE)... > Snapessays.com

(Solution) Amrita Vishwa Vidyapeetham Amrita School of Engineering, Amritapuri Department of: Computer Science and Engineering First Semester:Tech (CSE)...

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

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