DBI202Xuất hiện trong 1 đề thi
An E/R diagram is a graph that represents sets of entities, attributes, and relationships. Elements of each of these types are represented by nodes of the graph, and what three special node shapes indicate the type?
Các lựa chọn
AEntity sets are represented by rectangles.
BEntity sets are represented by diamonds.
CAttributes are represented by ovals.
DAttributes are represented by rectangles.
ERelationships are represented by diamonds.
FRelationships are represented by ovals.