DBI202Xuất hiện trong 1 đề thi
For the following relations and a Set operation: **Employee** | Name | City | Gender | | :--- | :--- | :--- | | Nguyen Trung Truc | HCM | Male | | Le Hong Son | HCM | Male | **Customer** | Name | City | Gender | | :--- | :--- | :--- | | Nguyen Trung Truc | HCM | Male | | Tran Tuyet Nhi | HN | Female | Employee \\ Customer What is the result of the Difference operation?
Các lựa chọn
AName | City | Gender
Le Hong Son | HCM | Male
BName | City | Gender
Nguyen Trung Truc | HCM | Male
Tran Tuyet Nhi | HN | Female
CName | City | Gender
Nguyen Trung Truc | HCM | Male
Le Hong Son | HCM | Male
DName | City | Gender
Nguyen Trung Truc | HCM | Male
Le Hong Son | HCM | Male
Tran Tuyet Nhi | HN | Female