Object graph

<h2 id="physical-representation">Physical representation</h2>
<p>An object graph is a <a href="/facts/Directed_graph/YBdfQ0um">directed graph</a>, which might be <a href="/facts/Cycle_graph/bYhnPDHc">cyclic</a>. When stored in <a href="/facts/Random_access_memory/DuD4bxh6">RAM</a>, objects occupy different segments of the memory with their attributes and function table, while relationships are represented by <a href="/facts/Pointer_(computer_programming)/fPoNzy9b">pointers</a> or a different type of global handler in higher-level languages.
</p>
<h2 id="examples">Examples</h2>
<p>For instance, a Car class can compose a Wheel one. In the object graph a Car instance will have up to four links to its wheels, which can be named frontLeft, frontRight, back Left and back Right.
An example of an <a href="/facts/Adjacency_list/CYgNQoLp">adjacency list</a> representation might be something as follows: 
</p>
 c:Car → {front Left:Wheel, front Right:Wheel, back Left:Wheel, back Right:Wheel}.

<h2 id="see-also">See also</h2>
<ul><li><a href="/facts/Data_model/j1YyzpJ3">Data model</a></li>
<li><a href="/facts/Object_diagram/3nVn1YJ9">Object diagram</a></li></ul>

Object graph open-in-new

Object graph