FUNDAMENTALS OF COMPUTER

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 IBM Information Management System (IMS) and the RDM Mobile are examples of a hierarchical database system with multiple hierarchies over the same data.

Detailed explanation-3: -Examples of Hierarchical Database Systems IBM’s Information Management System (IMS) is an example of a hierarchical database system. Windows Registry is another such example. Another example that you may be aware of is XML data storage that we discussed earlier. XML has a root node enclosing one or more child nodes.

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.