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Question 1
Define ACID properties, and briefly explain the methods used to deal with them in the DBMS.
Question 2
Why is concurrent execution of transactions important in the DBMS? What is a schedule and how do you determine the conflicts between transactions in a schedule? You may need to explain this using such anomalies as dirty read, unrepeatable read, and blind write.
Question 3
Define Strict 2PL protocol and precedence graph, and explain how to use them to address the conflict serializability problem.
Question 4
Explain the reason of deadlock and discuss how to deal with a deadlock issue in the DBMS.
Question 5
Briefly explain the ARIES recovery algorithm, including the main phases, main principles and key ideas behind the algorithm such as WAL protocol and checkpointing etc.
Write down the difference between traditional file systems Vs modern database environment. Describe the following: Physical data independence Vs logical data independence
Create and submit a screenshot of your database diagram based on the tables, and generate the data definition language (DDL) for each table.
Which field or fields cause a table to no longer be in third normal form? In which normal form is denormalized table?
Write SELECT statements for the following (include a screenshot of the SQL and its execution, including the resulting data).
How to interactively query a database by using SQL statements and SQL*PLUS commands and how to use spool command to save an interactive session within SQL*PLUS.
Create a report which identifies five most expensive bicycles. The report must list bicycles in descending order from most expensive to lease expensive, the quantity on hand for each, and the markup percentage for each.
Your company has put in the request for a new database system and you have been tasked with architecting the security associated with this new project.
What are triggers used for, and why are they significant in database systems? Give an example of situation where a trigger would be appropriate. What would implementation of this trigger look like?
Suppose you have a relation schema about teaching classes that has the following attributes: Class, Instructor, Time and Room - based on your understanding of this scenario, what functional dependencies can you identify that hold on this relation?
Write a SELECT statement that returns two columns: VendorName and PaymentSum, where PaymentSum is the sum of the PaymentTotal column.
In this assignment, analyze crime rates using data mining clustering techniques (K-means) to get an accurate prediction to enable police forces to get a clear picture of criminals and solve crimes.
A narrative description of the field chosen for the application being created. This should also include a description of the problem and addressing the weaknesses to be solved by the database.
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