MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -The registry is a hierarchical database that contains data that is critical for the operation of Windows and the applications and services that run on Windows. The data is structured in a tree format. Each node in the tree is called a key. Each key can contain both subkeys and data entries called values.

Detailed explanation-2: -The Windows registry on most computers is also an example of a hierarchical data structure. Complex manufacturing projects also often use hierarchical data models due to large volumes of data. Hierarchical data is best used when: The data can be stored in a “tree” form with a clear parent and child structure.

Detailed explanation-3: -Hierarchical models are also commonly used as physical models because of the inherent hierarchical structure of the disk storage system like tracks, cylinders, etc. There are various examples such as Information Management System (IMS) by IBM, NOMAD by NCSS, etc.

Detailed explanation-4: -conceptual/lexical separation is the basis for the broad class of three-node ‘hierarchical models’, consisting of the word-association, concept-mediation, mixed and revised-hierarchical models.