Complete the entries: 1. Set methods are commonly called v methods. 2. Set methods change v fields. 3. Get methods are commonly called v methods or query methods. 4. Get methods retrieve the values in fields. 5. To ensure data integrity, code that checks the validity of the data should be implemented in the methods.
Complete the entries: 1. Set methods are commonly called v methods. 2. Set methods change v fields. 3. Get methods are commonly called v methods or query methods. 4. Get methods retrieve the values in fields. 5. To ensure data integrity, code that checks the validity of the data should be implemented in the methods.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
Transcribed Image Text:Complete the entries:
1. Set methods are commonly called
methods.
2. Set methods change
v fields.
3. Get methods are commonly called
v methods or query methods.
4. Get methods retrieve the values in
fields.
5. To ensure data integrity, code that checks the validity of the data should be implemented in the
v methods.
Expert Solution
Step 1
As we know data of an object must be kept private. However, if any data member is declared private, then sub/child class functions can not access them.
Hence, there should be some methods in the class that can permit the user of an object to access and alter the data.
Accessor Method: This method is used to access the data members of an object.
Mutator Method: This method is used to modify the data members of an object.
Data integrity ensures that a data passed from functions to functions remain unchanged.
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