Question

Which of the followings was the first ever used for data model?

Select one:
a. Tree based model
b. Graph based model
c. File system
d. Relational model

Answer 1

The relational model was the first ever used for data modeling. It organizes data into tables with rows and columns based on the concept of relations.

Step-by-step explanation:

The relational model was the first ever used for data modeling. It was proposed by Edgar F. Codd in 1970 and is based on the concept of relations, also known as tables. In this model, data is organized into tables with rows and columns, where each row represents a record and each column represents an attribute or field. This model revolutionized the way data is stored and queried in databases.