Consider the Information Engineering diagram shown in the exhibit. Building_ID, R_ID, Room_Count and Room_Num are integer numbers, whereas Bldg_Name, Location and Res_Name are all represented by variable-length strings with a maximum of 20 characters.
Which SQL statement best implements the RESIDENT relation shown in this diagram?
A relation for a construction company is shown in the exhibit. Which of the following best defines the relationship between Cust_ID and Cust_Name?
Which of the following occurs in a relation when records are added or removed?