ORACLE 12cSQL - Solution-Manual-for-Oracle-12c-SQL-3rd-Edition-Casteel ch1
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University of South Africa**We aren't endorsed by this school
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CSET INF3707
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Jan 14, 2025
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Oracle 12c SQL, ISBN: 9781305251038 Ch. 1 1 Oracle 12c: SQL 3rd Edition Casteel Full chapter at: https://testbankbell.com/product/solution-manual-for-oracle-12c-sql-3rd-edition-casteel/ Chapter 1 Solutions Review Questions 1.What is the purpose of an E-R model?To identify the entities about which the database should store data and the relationships among those entities. 2.What is an entity?An entity is any person, place, or thing having attributes, or characteristics, of interest to the organization. 3.Give an example of three entities that might exist in a database for a medical office and some attributes that would be stored in a table for each entity.Doctor: name, address, Social Security Number, medical ID number; Patient: name, address, Social Security Number, insurance policy information, medical history; Appointment: date, time, patient, doctor. 4.Define a one-to-many relationship. An occurrence of data in one entity can result in zero, one, or many occurrences of the data in the other entity. Zero (or no) related records can occur only in optional relationships. 5.Discuss the problems that can be caused by data redundancy.Can create data anomalies or inconsistencies in the data, making it unreliable. 6.Explain the role of a primary key.The primary key is used to uniquely identify each row in a table. 7.Describe how a foreign key is different from a primary key.A foreign key is used to reference or join data in different tables. In most cases, the foreign key references a primary key in another table. In a one-to-many relationship, the foreign key is stored in the “many” entity. 8.List the steps of the normalization process.First, a primary key is identified and any repeating groups are identified (1NF). Second, any partial dependencies are eliminated (2NF). Third, any transitive dependencies are eliminated (3NF).
Oracle 12c SQL, ISBN: 9781305251038 Ch. 1 2 9.What type of relationship can’t be stored in a database? Why?A many-to-many relationship can’t be stored in a database because there would be no way to restructure or rejoin the data correctly. 10.Identify at least three reasons an organization might analyze historical sales data stored in its database.Answers will vary. To determine the necessary inventory levels to support sales fluctuations, to project employee-scheduling requirements, to determine appropriate marketing campaigns based on historic purchasing patterns, and so forth. Multiple Choice 1. d 2. b 3. d 4. a 5. c 6. a 7. a 8. d 9. d 10. c 11. b 12. b 13. a 14. b 15. b 16. d 17. c 18. c 19. a 20. c Hands-On Assignments 1.Which tables and fields would you access to determine which book titles have been purchased by a customer and when the order shipped?CUSTOMERS: Customer#; ORDERS: Order#, Shipdate, Customer#; ORDERITEMS: Order#, ISBN; BOOKS: ISBN, Title 2.How would you determine which orders have not yet been shipped to the customer?Identify all orders that don’t have an entry for the date shipped. 3.If management needed to determine which book category generated the most sales in April 2009, which tables and fields would they consult to derive this information?ORDERS:
Oracle 12c SQL, ISBN: 9781305251038 Ch. 1 3 Orderdate, Order#; ORDERITEMS: Order#, ISBN, Quantity, Paideach; BOOKS: ISBN, Category 4.Explain how you would determine how much profit was generated from orders placed in April 2009.Determine the amount of profit generated by each book on an order item (Paideach-Cost), multiply the profit for each book by the quantity purchased, and then total the amount of profit generated by all orders placed in April. 5.If a customer inquired about a book written in 2003 by an author named Thompson, which access path (tables and fields) would you need to follow to find the list of books meeting the customer’s request?AUTHOR: Lname, AuthorID; BOOKAUTHOR: AuthorID, ISBN; BOOKS: ISBN, Pubdate. 6.A college needs to track placement test scores for all incoming students. Each student can take a variety of tests, including English and math. Some students are required to take placement tests because of previous coursework. Students Tests 7.Every employee in a company is assigned to one department. Every department can contain many employees. Departments Employees 8.A movie megaplex needs to collect and analyze movie attendance data. The company maintains 16 theaters in a single location. Each movie offered can be shown in one or more of the available theaters and is typically scheduled for three to six showings in a day. The movies are rotated through the theaters to ensure that each is shown in one of the stadium-seating theaters at least once.Movies Showings Theaters
Oracle 12c SQL, ISBN: 9781305251038 Ch. 1 4 9.An online retailer of coffee beans maintains a long list of unique coffee flavors. The company purchases beans from a number of suppliers; however, each specific flavor of coffee is purchased from only a single supplier. Many of the customers are repeat purchasers and typically order at least five flavors of beans in each order. Suppliers Products Order_items Orders Customers 10. Data for an information technology conference needs to be collected. The conference has a variety of sessions scheduled over a two-day period. All attendees must register for the sessions they plan to attend. Some speakers are presenting only one session, whereas others are handling multiple sessions. Each session has only one speaker. Speakers Sessions Registrations Attendees Advanced Challenge Results of the normalization process will vary, depending on the assumptions made by the student. Unnormalized: first name, last name, billing address, quantity, retail price, shipping address, order date, ship date 1NF: CUSTOMERS: customer #, first name, last name, billing address ORDERS: order #, shipping address, quantity, retail price, order date, ship date 2NF:
Oracle 12c SQL, ISBN: 9781305251038 Ch. 1 5 CUSTOMERS: customer #, first name, last name, billing address ORDERS: order #, shipping address, order date, ship date ORDERITEMS: order #, item#, quantity, retail price, ISBN 3NF: CUSTOMERS: customer #, first name, last name, billing address ORDERS: order #, shipping address, order date, ship date ORDERITEMS: order #, item#, quantity, ISBN BOOKS: ISBN, retail price Case Study: City Jail The appearance of the E-R model will vary depending on the notations or modeling software students are using. An example is shown on the next page. Additional entities and/or attributes: Answers will vary greatly. A Jails entity is an example of a possible additional entity. Image items, such as a criminal photo and fingerprints, are examples of additional attributes that might be required.
Oracle 12c SQL, ISBN: 9781305251038 Ch. 1 6 Criminal_ID Last First Street City State Zip Phone V_status P_status Criminals Alias_ID Criminal_ID Alias City Jail Database E-R Model Aliases Crime_ID Criminal_ID Classification Date_charged Status Hearing_date Appeal_cut_date Crimes Appeal_ID Crime_ID Filing_date Hearing_date Status Appeals Officer_ID Last First Precinct Badge Phone Status Officers Crime_ID Officer_ID Sentence_ID Criminal_ID Type Prob_ID Start_date End_date Violations Crime_officers Sentences Crime_charges Charge_ID Crime_ID Crime_code Charge_status Fine_amount Court_fee Amount_paid Pay_due_date Prob_ID Last First Street City State Zip Phone Email Status Prob_Officers Crime_code Code_description Crime_codes