Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
The database used for this question is a very simple one with the following schema: (Primary keys are bold, foreign keys are underlined) CUSTOMER (CustID, FirstName, LastName, City, Phone, Email) INVOICE (InvoiceNumber, CustID, Date) INVOICE_ITEM(InvoiceNumber, ItemNumber, Quantity) ITEM (ItemNumber, ItemName, UnitPrice) When a customer makes a purchase, an invoice is created. The invoice may be for many items. For example, in a single purchase, a customer might buy 10 Back Scratchers, 4 Hair Removers and a Dog Lead. Provide relational algebra (NOT SQL) queries for the following: a. List the first and last names of Customers who come from the City named Perth. b. List the first and last names of customers who had transactions on 1st August 2012. c. List the price of the item called "Back Scratcher" d. List the first and last names of any customer who has purchased more than 10 "Back Scratchers" in a single transaction. e. List the names and quantities of items purchased on 1st August 2012 by the customer Peter Griffin. f. List the dates on which Peter Griffin made purchases. g. List the first and last names of customers who have bought "Back Scratcher" or "Hair Remover" h. List the first and last names of customers who have bought "Back Scratcher" but have not bought "Hair Remover" i. List the first and last names of customers who have bought "Back Scratcher" and "Hair Remover" j. List the first and last names of any customers who have bought all of the items. (This does not need to be as part of a single purchase).
Its a lead a project that will implement a new learning management system for your university. You have two key tasks: Task 1: Investigate learning management software packages that are available through application service providers.
What about giving same name to attributes which are in different tables but are not same? For instance, "Description" in both a Course table and a Classroom table.
Identify the Functional Dependencies in R. Be sure to maximize the number of attributes on the right hand side (RHS) and minimize the number of attributes on the left hand side (LHS) of each FD. You should exclude any trivial FDs in your answer.
Transform the tables into one or more tables in BCNF. Write the primary keys, candidate keys, and referential integrity constraints.
Design an updateable database for storing customer and sales data. Explain how to deal with the problems of missing data.
What criteria would you use in selecting a life-cycle model for the project?
Show all the data in each of the four tables. Do not show foreign key columns. Write names and e-mail addresses for all customers who have had a stove repair that cost more than $50.
supplies % of votes each candidate is likely to receive, based on popularity rating. Actual number of votes received is that percentage of General votes. You should enter data for each candidate in each of the eight constituencies.
What problem would you encounter if you wanted to produce a listing by city? How would you solve this problem by altering the file structure?
Write SQL statements that do the following: Calculate the average salary for all employees. Calculate the maximum salaries for exempt and non-exempt employees.
You should document a UML design for the proposed system. This should include a description of: architecture, requirements and functionality, detailed system design.
Create a diagram using Visio, Microsoft Paint, or other graphical creation utility of your choosing to illustrate the conceptual data feeds into and out of the data warehouse. Note: The graphically depicted solution is not included in the required..
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd