In computer science, a binary tree is a tree data structure in which each node has at most two children. Typically the first node is known as the parent and the child nodes are called left and right. In type theory, a binary tree with nodes of type A is defined inductively as TA = μα. 1 + A × α × α. Binary trees are commonly used to implement binary search trees and binary heaps.
Lazy loading is a design pattern commonly used in computer programming to defer initialization of an object until the point at which it is needed. It can contribute to efficiency in the program's operation if properly and appropriately used. The opposite of lazy loading is Eager Loading.