Which of the following are data models?Select one or more:a.Relationalb.Hierarchicalc.Networkd.Conceptual
Question
Which of the following are data models?Select one or more:a.Relationalb.Hierarchicalc.Networkd.Conceptual
Solution
All of the options mentioned are data models.
a. Relational: This is a type of data model that organizes data into one or more tables (or "relations") of columns and rows, with a unique key identifying each row.
b. Hierarchical: This is a type of data model in which the data is organized into a tree-like structure. The structure allows representing information using parent/child relationships: each parent can have many children, but each child has only one parent.
c. Network: This is a type of data model that allows each record to have multiple parent and child records, which, when visualized, form a web-like structure of networked records.
d. Conceptual: This is a type of data model that defines how the system should be organized and operated. It is typically created by business stakeholders and data architects. The purpose is to organize, scope and define business concepts and rules.
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