Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Concept of Pointer Parameter
Pointers are the special variable that stores the variable address, instead of storing the variable value. Pointer is a powerful feature of a programming language. A pointer is mostly used to save memory space and improve execution time.
Question
What is a data abstraction? 1 p a list / array onEvent global variable(s) a function
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Transcribed Image Text:What is a data abstraction? 1 p a list / array onEvent global variable(s) a function
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Explanation:

Data Abstraction means hiding the details and showing only details that are important/necessary.

a global variable is visible to all, similarly, list/array and a function but onEvent will only show detail when its trigger will be up.

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