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).
Show the REA diagram using Microsoft Word
The appropriate SQL command which should be copied from your source code in MySQL and resultant tables, which must be screenshots to show the change due to the execution of the SQL commands
Does the above have one or more functional dependency (do not list FDs by applying derivation rules)? If so, what is it? Show how you will remove it by decomposition.
Write a command to list all the employees hired in 2003 and 2004. Sort the rows by the hire_date column in descending order.
Instructions- This assignment builds on your first two assignments using Access and asks you to consider the process of designing, implementing, and converting data.
Construct a diagram using Rationale to map the arguments about a moral claim that you have identified in the article/case study and write an essay, which maps closely to the Rationale diagram that you constructed.
Discuss what it will take to build a Web architecture, move an existing Website with minimal downtime, and provide a disaster recovery solution to ensure the site is always available.
Discuss why a relational database would be suitable for the organisation in the case study and provide three reasons for this recommendation and discuss using three advantages that a database management system provides to an organisation.
Write a Assignment to study and modify the PostgreSQL source code, with a focus on one of the core modules - the buffer manager
Your company has put in the request for a new database system and you have been tasked with architecting the security associated with this new project.
A database at a college is required to support the following requirements. Complete the information-level design for this set of requirements. Determine any constraints you need that are not stated in the problem.
Suppose that we replace the wait and signal operations of monitors with a single construct await(B), where B is a general Boolean expression. Write a monitor using this scheme to implement the readers--writers problem.
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