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concrete class comparison table

Subject	need in	have	be	is a kind of	is a subtopic of	group	hide	create	has part	has definition	divide up into	help	represent	name after	declare	draw as	contain	see also
leaf class	a domain model if you have to store or manipulate instances of it in order to implement a requirement	a comment at the top describing the purpose of the class, how it should be used, its authors and its history of modification	the unit of data abstraction in an object-oriented program	concrete class	2.6 - The Effect of Inheritance Hierarchies on Polymorphism and Variable Declarations	the pieces of data that describe some entity, so that programmers can manipulate that data as a unit	the details of data	to hold a responsibility if the responsibility cannot be attributed to any of the existing classes	variables	A class at the very bottom of an inheritance hierarchy	methods	a programmer to cope with the complexity of data	several similar objects	the internals of a computer system such as 'Record', 'Table', 'Data', 'Structure', or 'Information'	a list of variables, called instance variables, corresponding to data that will be present in each instance	a box with the name of the class inside in a UML class diagram	data associated with each object	class^2

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