COMPUTER SCIENCE AND ENGINEERING
SQL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A Relational Database
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Hierarchical Database
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Network Database
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Object Oriented Database
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Detailed explanation-1: -A hierarchical model represents the data in a tree-like structure in which there is a single parent for each record.
Detailed explanation-2: -A hierarchical database model is a data model in which the data are organized into a tree-like structure. The data are stored as records which are connected to one another through links. A record is a collection of fields, with each field containing only one value.
Detailed explanation-3: -The most popular hierarchical databases are IBM Information Management System (IMS) and RDM Mobile. Windows Registry is another example of a real-world use cases of a hierarchical database system. XML and XAML are two more popular and most widely use data storages that are based on hierarchical data model.
Detailed explanation-4: -What is the Hierarchical Model in DBMS? The Hierarchical Model was the first database management system model. This concept uses a hierarchical tree structure to organise the data. The hierarchy begins at the root, which contains root data, and then grows into a tree as child nodes are added to the parent node.