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Q1. Explain the distinction between total and partial constraints.
Q2. Explain the difference between a weak and a strong entity set.
Q3. Explain the distinction between condition-defined and user-defined constraints. Which of these constraints can the system check automatically? Explain your answer
Q4. Design a database for an airline. The database must keep track of customers and their reservations, flights and their status, seat assignments on individual flights, and the schedule and routing of future flights. (Your design should include an E-R diagram, a set of relational schemas, and a list of constraints, including primary-key and foreign-key constraints.)
How would you modify the node-insertion algorithm described in Section 20.7.7?
You have file containing sporting goods which are sold online. Each item record contains item id, item name, item description, item category, item price, and units in stock.
What is the best test for determining whether a determinant is unique?
Identify and explain the COBIT framework for IT governance to safeguard daily operations, audit and performance mechanism, and its role in managing data retention, archive, and destruction. Include the need to plan and organize domain control obje..
In physics, a common useful equation for finding the position s of a body in linear motion at a given time t, based on its initial position s0, initial velocity v0, and rate of acceleration a, is the following:
How do these issues relate to the strategic choices that the firm has made? Does the analogy to a manufacturing firm seem appropriate?
The project team is ready to create the directory structure for the Web site. You are tasked with creating the directories and implementing the security mechanism. For this assignment, you need to create the following directory structure and p..
Write an algorithm in structured English (pseudocode) that describes the steps required to perform the task specified. Some examples of pseudocode can be found at http://www.unf.edu/~broggio/cop2221/2221pseu.htm.
With 10 receivers, what is the probability half will send in one particular 5% subinterval? Multiply this by 20 for an estimate of the probability half will all send in the same arbitrary 5% subinterval. Hint: How many ways can we choose 5 receive..
If p = 0.2, what is the probability that the child will throw the Frisbee more than four times?
If you believe a code of ethics impacts an IT professional's behaviour, explain what that impact is and why it occurs. If you do not believe a code of ethics impacts an IT professional's behaviour, explain why this might be the case.
Why is RARP used in one case versus ARP? This one is complex and I don't know how to do it
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