Big Java, Binder Ready Version: Early Objects
6th Edition
ISBN: 9781119056447
Author: Cay S. Horstmann
Publisher: WILEY
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Expert Solution & Answer
Chapter 20.3, Problem 15SC
Explanation of Solution
Radio button:
- It allows only one option to be selected out of different options that are available.
- It contains two states true or false.
- Example: If the person needs to choose the gender the radio button can be used because the user is capable of choosing one option either male, female or other.
Check boxes
- It allows one or more options being selected from the options available.
- It contains two states checked and unchecked
- Example: If the person needs to choose the Language the check boxes can be used because the user is capable of choosing list of one or more language from the list...
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Consider the ER diagram of online sales system above. Based on the diagram answer the questions below,
a) Based on the ER Diagram, determine the Foreign Key in the Product Table. Just mention the name of the attribute that could be the Foreign Key.
b) Mention the relationship between the Order and Customer Entities. You can use the following:
1:1, 1:M, M:1, 0:1, 1:0, M:0, 0:M
c) Is there a direct relationship that exists between Store and Customer entities? Answer Yes/No?
d) Which of the 4 Entities mention in the diagram can have a recursive relationship?
e) If a new entity Order_Details is introduced, will it be a strong entity or weak entity? If it is a weak entity, then mention its type?
Chapter 20 Solutions
Big Java, Binder Ready Version: Early Objects
Ch. 20.1 - Prob. 1SCCh. 20.1 - Prob. 2SCCh. 20.1 - Prob. 3SCCh. 20.1 - Prob. 4SCCh. 20.1 - Prob. 5SCCh. 20.1 - Prob. 6SCCh. 20.1 - Prob. 7SCCh. 20.1 - Prob. 8SCCh. 20.2 - Prob. 9SCCh. 20.2 - Prob. 10SC
Ch. 20.2 - Prob. 11SCCh. 20.2 - Prob. 12SCCh. 20.2 - Prob. 13SCCh. 20.3 - Prob. 14SCCh. 20.3 - Prob. 15SCCh. 20.3 - Prob. 16SCCh. 20.3 - Prob. 17SCCh. 20.3 - Prob. 18SCCh. 20.3 - Prob. 19SCCh. 20.4 - Prob. 20SCCh. 20.4 - Prob. 21SCCh. 20.4 - Prob. 22SCCh. 20.4 - Prob. 23SCCh. 20.4 - Prob. 24SCCh. 20.5 - Prob. 25SCCh. 20.5 - Prob. 26SCCh. 20 - Prob. 1RECh. 20 - Prob. 2RECh. 20 - Prob. 3RECh. 20 - Prob. 4RECh. 20 - Prob. 5RECh. 20 - Prob. 6RECh. 20 - Prob. 7RECh. 20 - Prob. 8RECh. 20 - Prob. 9RECh. 20 - Prob. 10RECh. 20 - Prob. 11RECh. 20 - Prob. 12RECh. 20 - Prob. 13RECh. 20 - Prob. 14RECh. 20 - Prob. 15RECh. 20 - Prob. 16RECh. 20 - Prob. 17RECh. 20 - Prob. 18RECh. 20 - Prob. 19RECh. 20 - Prob. 20RECh. 20 - Prob. 21RECh. 20 - Prob. 22RECh. 20 - Prob. 1PECh. 20 - Prob. 2PECh. 20 - Prob. 3PECh. 20 - Prob. 4PECh. 20 - Prob. 5PECh. 20 - Prob. 6PECh. 20 - Prob. 7PECh. 20 - Prob. 9PECh. 20 - Prob. 10PECh. 20 - Prob. 11PECh. 20 - Prob. 12PECh. 20 - Prob. 1PPCh. 20 - Prob. 2PPCh. 20 - Prob. 3PPCh. 20 - Prob. 4PPCh. 20 - Prob. 5PPCh. 20 - Prob. 6PPCh. 20 - Prob. 7PP
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