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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.
Complete database exercise by converting user form located the evaluation procedures section of the syllabus into 1NF and 2NF.
Write the following procedures: woman_wants_to_enter, man_wants_to_enter, woman_leaves, man_leaves, using counters and sychronisation techniques to ensure that the correct behaviour will occur.
CAR (Serial-No, ModConsider the given relations for database which keeps track of auto sales in car dealership.
What is the maximum rate at which data can be read from disk, assuming that we can only read data from one surface at a time? What is the average rotational latency?
Identify the business processes which would be evaluated and tracked with a DW/BI application and state your reasoning or justification for including these in the DW/BI.
Create Entity-Relationship diagram for a bookstore database, that maintains information about books, professional journals, their authors, and publishers.
List the names of agents that placed an order for customer C003 or customer C006. List all pair of products names that are in the same city, along with their city name.
Convert the table to 3NF. Represent your answer in DBDL. (i.e. Give table name and fields. Underline the primary key. Draw an entity-relationship diagram showing all relationships.)
Input names of students from the user, terminated by ZZZ, and create a data file GRADES with records of the form.
Describe briefly what are the main benefits of using DBMS to manage data in program applications involving extensive data access.
Compute a canonical cover for the above set of functional dependencies (show each step of your derivation with an explanation).
Write down the SQL code in order to carrying out the following requests. Display all the data in each of the four tables. Do not display the foreign key columns.
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