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!
1. Ray wants to start a DVD rental program at his stores that he plans to call Henry's DVD Club. He refers to each of his customers as "members." Each member in the club is assigned a number. He also stores the members' names and addresses. In addition, he stores the number of rentals the member has made and the date the member joined the club. He periodically has promotions during which members can earn bonus units that they can later apply to the cost of renting DVDs. He needs to store the number of bonus units the member has earned.
2. Modify in Exercise 1 so that it will also support the following situation. Ray wants to store information about the DVDs the club owns. When the club purchases a DVD, Ray assigns it a number. Along with the number, he stores the number of the movie on the DVD, the date the DVD was purchased, the number of times it has been rented, and the number of the member who is currently renting it. (If the DVD is not currently being rented, the member number will be null.) Ray also needs to store the number of the branch to which the DVD is assigned. Finally, Ray would like to store the history of the rental of each particular DVD. In particular, he needs to store the DVD number, the date of the rental, the date it was returned, and the number of the member who rented the DVD. Assume that a DVD could potentially be rented more than once on the same day. (Hint: Review the discussion of the categories of primary keys to determine what type of primary key would be appropriate for this relation.)
Discussion of database with the goal of creating Web database applications. There is something of a disconnect between modeling data in an object-oriented language, such as Java, and a traditional database
Import your IDEF1X diagram into Oracle and create the appropriate tables and relationships. Your design should include a specification of tables, attributes, primary and foreign keys, referential integrity constraints, and referential integrity ac..
Describe how to create a query in Access Query Wizard equilvant to the query: SELECT first, last, department, hours FROM payroll WHERE hours>.
Athabasca University has about 32,000 students between the ages of 17 to 60. Consider the AU student relation with the following schema.
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.
Consider relation schema r(A,B,C,D,E, F) and a set of functional dependencies {A BCD,BCDE,BD,DA}. Calculate canonical cover for set of functional dependencies (show each step of your derivation with an explanation).
Specify the approach (qualitative or quantitative), research design, sampling strategy, data collection procedures, and data analysis techniques to be used.
A narrative description of the field chosen for the application being created. This should also include a description of the problem and addressing the weaknesses to be solved by the database.
Explain what you understand by the terms Query Evaluation and Query optimization - Discuss the ways or strategies you can apply to improve the query performance
Using the Internet or other sources to find two dominate Cloud DBMS vendors and their latest products. Give the URLs for these DBMSs. Explain what is the NoSQL movement. Find one "DBMS" that is NoSQL. Explain what is Vertia. What are the features of..
Find all Governors General of Australia who were Barons at the time and Restrict your query to Governors General who were Barons at the time of their appointment
Create a database that contains the inventory of your organization's technology, as well a table including employee information. Build your database named IT_inventory, linking users to workstations, i.e., each computer (desktop or notebook) will b..
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