What is a primary key?
A) A field (or group of fields) that uniquely identifies a given record in a table.
B) A primary key of one table that appears as an attribute in another table and acts to provide a logical relationship between the two tables.
C) Characteristics or properties of an entity.
D) A field (or group of fields) that uniquely identifies a given attribute in a table.
Correct Answer:
Verified
Q3: Which of the following is correct in
Q4: What is a foreign key?
A) A field
Q5: In the relational database model,what is a
Q6: Which of the following is a valid
Q7: Why do relational databases use primary keys
Q9: What refers to how well a system
Q10: Which of the following measures how quickly
Q11: What is the physical view of information?
A)
Q13: What is information redundancy?
A) Duplication of information.
B)
Q187: What is the primary problem with redundant
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents