List 5 characteristics of a good variable name. For each, give a good and bad example, and explain why they are good or bad

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
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List 5 characteristics of a good variable name. For each, give a good and bad example, and explain why they are good or bad.

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Characteristics of a good variable name:

  • A variable name must begin with a letter or an underscore ( ).
  • A variable name must not begin with a digit.
  • Only alphanumeric characters and underscores (a-z, A-Z, 0-9, and _) are permitted in variable names.
  • The case of variable names matters (age, Age and AGE are three different variables)
  • The variable name can be as long as you want.
  • Spaces are not permitted in variable names.
  • There can be no Go keywords in the variable name.
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