SWR302Xuất hiện trong 1 đề thi
In entity-relationship diagram or ERD, what does the “cardinality” of a relationship represent?
Các lựa chọn
AThe number of attributes of an entity
BThe relationship between entities (e.g., one-to-one, one-to-many, many-to-many).
CThe number of entities in the system.
DThe speed of the system when querying data.
EHow data is organized in a database.