Database and Cloud Computing

Question 1

1. (a) In an environment where several users share access to a single database, can one user ever block another’s access for an unlimited period of time?  And if so, describe a scenario in which two users could cause this to happen?

Yes, this situation called indefinite postponement.

https://www.linkedin.com/pulse/how-avoid-deadlock-indefinite-postponement-java-programs-chris-graham/

https://wps.prenhall.com/esm_deitel_os_3/17/4402/1127072.cw/index.html

Question 2

1. Can a database contain two identical records without a negative effect on the integrity of the database? Why or why not?

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Question 3

1. Some operating systems perform buffered I/O. In this scheme, an output request is accepted from a user, and the user is informed of the normal I/O completion. However, the actual physical write operation is performed later, at a time convenient to the operating system. Discuss the effect of buffered I/O on integrity in a DBMS.

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Question 4

1. Explain the differences between public, private, and community clouds. What are some of the factors to consider when choosing which of the three to use?

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Question 5

1. How do cloud services make DLP more difficult? How can customers wishing to enforceDLP mitigate this issue?

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Question 6

1. “You are opening an online store in a cloud environment. What are three security controls you might use to protect customers credit card information? Assume that the information will need to be stored.”

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