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Suppose that a data warehouse consists of the three dimensions time, customer, and cell phone plan, and the two measures number of calls and cell phone bill
a) Draw a schema diagram for the above data warehouse using the star schema.b) Starting with the base cuboid [month, customer, plan], what specific OLAP operations should be performed in order to
i. Find the total no of calls made by each customer in 2009.ii. Find the total no of calls made by all the customers in each plan every year.iii. Find the monthly bill for each customer.
Energy in the home, personal energy use and home energy efficiency and Efficient use of ‘waste' heat and renewable heat sources
You have a file which contains credit card records. Each record contains field for the card number, expiration date, and name of card holder. Explain what primary problem you try to solve is.
Design a scheme for determining exactly which one of the wine bottles was poisoned in just one month's time while expending O(logn) taste testers.
You are to design a prototype for a hospital management system. Design a data model for this system, Convert the data model to a set of virtual windows.
Evaluate the success WellCo and PharmaCARE shareholders
Design a nested menus interface for a check-in and check-out hotel reservation system that can be used internationally.
Course: data mining. Require a 7 page essay on subjects: Warehouse Architectures: the paper requires to contain information about centralized, federated, and tiered data warehouse.
Design a database for Ray. For each director, list his or her number and name and the year he or she was born. If the director is deceased, list the year of death.
Describe the information seen, using the terms such as table, schema and key. Describe the EMPLOYEE and EMP_PHOTO tables in detail.
Estimate the height of the B+ tree. (Giving a range of heights is fine.) Also estimate the amount of memory needed to store the tree, including leaves but not including the posting lists themselves.
Sketch an E-R diagram which reflects the above reuirements. Write a set of relational schemas and identify primary and foreign keys. Try not to include redundant schemas.
How many copies of the book titled „The big magic? are owned by the local library whose name is "Newtown" library?
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