The relational model feature is that there
A. is no need for primary key data
B. is much more data independence than some other database models
C. are explicit relationships among records
D. are tables with many dimensions
Answer:A
The relational model feature is that there
A. is no need for primary key data B. is much more data independence than some other database models C. are explicit relationships among records D. are tables with many dimensions
Explanation: The relational model is the conceptual basis of relational databases. Proposed by E.F.Codd in 1969, it is a method of structuring data using relations, which are grid-like mathematical structures consisting of columns and rows.