Maslow’s hierarchy of needs is a psychological theory that categorizes human needs in order of importance, with physiological needs at the base and self-actualization at the top. The theory includes five levels, with the bottom four referred to as “deficiency needs” and the fifth level involving personal development and growth. Maslow later added a sixth […]
A role hierarchy is a system where users have growing roles that branch upward like a tree, allowing for a simple organizational standard for database design and security permissions. However, in complex organizations, the attributes of one entity may not flow smoothly into another, resulting in wasted space and null attributes within the database. A […]
A class hierarchy is a group of related classes linked through inheritance. The hierarchy can have one or multiple base classes, and its structure depends on the programming language. Classes can vary in type and function, and there are no strict rules for their placement. While a hierarchy can be useful, it can also confuse […]
The memory hierarchy is a triangle of storage devices in a computer, with larger, cheaper, and slower devices at the bottom and smaller, more expensive, and faster devices at the top. Programmers must manipulate the hierarchy to build faster computers, but cannot move the sections. Well-crafted programs can predict where memory will be stored or […]
Data hierarchy is a way of organizing data in a hierarchical grouping, making it easier to find and create correct answers from programming languages. It is used in databases and programming patterns, with each level becoming more specific. Different database models have different ways of programming data hierarchy. Programming languages also use data hierarchy to […]
The Analytic Hierarchy Process is a decision-making method that assigns numerical values to factors based on their importance. It combines mathematical equations with individual preferences to make an informed decision. For example, when choosing a dog breed, the family ranks desired qualities and assigns scores to each breed based on those qualities. While not foolproof, […]
Hierarchical organizations have a rigid structure with subordinates following orders from supervisors who report to their own supervisors. Examples include religious, corporate, and governmental institutions. The Roman Catholic Church is a key example, with priests ascending through the ranks to become cardinals and potentially the pope. Hierarchies have been used since prehistoric times, with the […]
