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Regarding the computation of measures in a data cube:
(a) Enumerate three categories of measures, based on the kind of aggregate functions used in computing a data cube.
(b) For a data cube with the three dimensions time, location, and item, which category does the function variance belong to? Describe how to compute it if the cube is partitioned into many chunks.
(c) Suppose the function is "top 10 sales." Discuss how to efficiently compute this measure in a data cube.
"World food prices have increased sharply over the past five years."With the aid ofat least onediagram, explain how one possible demand factor and one possible supply factor may have caused this increase.
Discuss what normalization is and why it is important. Normalize the database design in Module 2, and describe whether the tables are all normalized. Explain whether the tables satisfy the requirements of 1NF, 2NF, and 3NF.
If you are working on a large software product or a large system with extensive software components, list the types of testing performed, examine the current status of test integration in your project, and give some improvement suggestions.
All 3 assignments in this unit involve creating and building upon a Customer Relationship Management (CRM) system for a nation-wide logistics company. In assignment 3 we aim to link assignments 1 and 2 together in order to add a rebate processor.
A fraction f of these computers are online at any one time. Under what conditions will the cable user get better service than the ADSL user?
You are a strategic analyst for a large consulting firm and specialise in the analysis of Australian companies. You have been asked by your manager to write a report analysing an Australian company's underlying strategy that has resulted in it mov..
When the operating system writes an error the information is usually stored in a memory location in the computer system. Describe how the error information is retrieved and stored?
Solve the following problem by inspection, and justify the method of solution in terms of the basic solutions of the simplex method.
Tip: If you do not have access to ER modeling software or a diagramming tool like Visio or OmniGraffle, you can simply create diagrams in a presentation tool like PowerPoint. This is an essential skill which is used in the field.
There are 39.37 inches in one meter and 12 inches in a foot. If the length is less than one foot, just display the number of inches. Show two digits after the decimal point. Thus 3.4 meters converts to 11.15 feet, while .2 meter converts to 7.87 i..
As the number of runs of the executable programs grows ("goes to infinity"), prove that the difference in compilation time on the two platforms becomes irrelevant for the total time for the program.
What part of the called method receives the value?
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