Among several representational models, __________ is the most popular and widely used in actual practice.
A
ER Model
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B
Relational Data Model
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C
Data Model
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D
Both ER Model and Relational Data Model
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Solution
The correct option is A Relational Data Model Among several representational models, Relational Data Model (RDM) is the most popular and widely used in actual practice. It represents the database as collection of relations, which resembles a table of values (or data table).