Question

We apply a database model (e.g., the relational model) to our database design at which point in the lifecycle?

a. As part of the conceptual -> logical design transition

b. As part of the logical - > physical design transition

c. As part of the physical -> implementation transition

d. As part of the requirements definition -> conceptual design transition

Answer 1

conceptual model is establishing the entities, their attributes, and their relationships. (E-R diagram)
Logical data model defines the structure of the data elements and set the relationships between them.(the relational model)

We apply a database model (e.g., the relational model) to our database design
(a) As part of the conceptual -> logical design transition