자주 헷갈리는 프로그래밍 용어

1년에 한번씩은 찾아보는 것 같아서 치트시트용으로 모아보았다.

Literal vs Constant

Literal	Constant
A literal is a value that is expressed as itself. For example, the number 25 or the string "Hello World" are both literals.	A constant is a data type that substitutes a literal. Constants are useful in situations where a specific, unchanging value is to be used at various times during the software program you want to more easily understand the software code

Entity vs Object

Entity	Object
Entity is a real time object that can be distinguised from other objects.	Object is an entity that has all the attributes and the actions required to be taken.
An entity contains of attributes.	An entity contains of attributes.
Entity is a uniquely identifiable object.	An object can be identified using its identifier.
Attributes is a property of entity.	Inheritance, Encapsulation, Polymorphism and Abstraction are part of object.

Symbol vs Variable