Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
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Chapter 5, Problem 5.22RQ
Explain how the terms parent table and child table relate to the tables in your answer to question 5.20.
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Chapter 5 Solutions
Database Concepts (7th Edition)
Ch. 5 - Explain how entities are transformed into tables.Ch. 5 - Prob. 5.2RQCh. 5 - Prob. 5.3RQCh. 5 - What is denormalization?Ch. 5 - Prob. 5.5RQCh. 5 - Explain the problems that denormalized tables may...Ch. 5 - Explain how the representation of weak entities...Ch. 5 - Explain how supertype and subtype entities are...Ch. 5 - Prob. 5.9RQCh. 5 - Prob. 5.10RQ
Ch. 5 - Show two different ways to represent the 1:1...Ch. 5 - Prob. 5.12RQCh. 5 - Prob. 5.13RQCh. 5 - Prob. 5.14RQCh. 5 - Prob. 5.15RQCh. 5 - Prob. 5.16RQCh. 5 - For your answer to question 5.15, code an SQL...Ch. 5 - Prob. 5.18RQCh. 5 - Prob. 5.20RQCh. 5 - Prob. 5.21RQCh. 5 - Explain how the terms parent table and child table...Ch. 5 - For your answers to questions 5.20, 5.21, and...Ch. 5 - Prob. 5.24RQCh. 5 - Prob. 5.25RQCh. 5 - Prob. 5.26RQCh. 5 - Prob. 5.27RQCh. 5 - Prob. 5.28RQCh. 5 - Define the three types of recursive binary...Ch. 5 - Prob. 5.30RQCh. 5 - Prob. 5.31RQCh. 5 - Prob. 5.32RQCh. 5 - Prob. 5.33RQCh. 5 - Prob. 5.34RQCh. 5 - Code an SQL statement that creates a table with...
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- What does it mean for two tables to be union compatible?arrow_forwardAssuming that the CUSTOMER table contains a CUST_AGE attribute, write the query to update the values in that attribute. (Hint: Use the results of the previous query.)arrow_forwardYou have the following tables: APARTMENTS (ADDRESS, CITY, STATE, RENTER_ID, RENTER_LAST_NAME) RENTERS (RENTER_ID, FIRST_NAME, LAST_NAME) What is the primary key for the APARTMENTS table? (It may be a composite key involving 2 or more fields) What are the foreign keys, if any? What is the primary key for the RENTERS table? What are the foreign keys, if any? What field in RENTERS can be eliminated so that the RENTERS table is normalized?arrow_forward
- If something is transitive, what does that entail? What is the rule for converting tables from the second normal form to the third normal form?arrow_forwardList the number and name of all customers who are assigned the Rep Juan Perez (first name & last name). Show 2 different ways to achieve these results. a) Accessing multiple tables b) Accessing multiple tablesarrow_forwardillustrate using students and professor tables what outer join isarrow_forward
- Can you explain what it means to be transitive? What is the rule for converting tables from the second normal form to the third normal form?arrow_forwardConsider the Sales Order and table used to store its data below. Sales_Order (SalesOrderNo, Date, CustomerNo, CustomerName, CustomerAddress, ClerkNo, ClerkName, ItemNo, Description, Quantity, UnitPrice, OrderTotal) Please normalize this table to 3NF.arrow_forwardWhat is the importance of primary key in a table? Explain with suitable example.arrow_forward
- Give an example of how (Tables) can be related through (Keys).arrow_forwardHow exactly would one go about modifying the framework of a table using SQL? Which of the following general kinds of changes are up for discussion? Which instructions need to be carried out so that these changes may be put into effect?arrow_forwardSome rows of the table STUDENT are shown below: CODE NAME DEPARTMENT GPA YEAR 291 ALEX PSI 3.1 1992 938 MICHELE PHY 2.3 1992 931 JHON MD 3.3 2001 182 JOE MD 3.4 2002 190 REY PHY 2.0 2001 330 RON PSI 3.9 2001 You want the name all departments that have a department GPA average of 2004 greater than the global GPA average. Which query gives you the desired result? a. SELECT DEPARTMENT FROM STUDENT WHERE YEAR = 2004 GROUP BY DEPARTMENT HAVING AVG(GPA) > (SELECT AVG(GPA) FROM STUDENT); b. SELECT DEPARTMENT FROM STUDENT WHERE YEAR = 2004 AND AVG(GPA) > (SELECT AVG(GPA) FROM STUDENT) GROUP BY DEPARTMENT; c. SELECT DEPARTMENT FROM STUDENT WHERE YEAR = 2004 GROUP BY DEPARTMENT HAVING AVG(GPA) > (SELECT GPA FROM STUDENT GROUP BY DEPARTMENT); d. SELECT * FROM STUDENT WHERE YEAR = 2004 GROUP BY DEPARTMENT HAVING AVG(GPA) > (SELECT AVG(GPA) FROM STUDENT);arrow_forward
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