Explanation: This can be taken as a primary key . 10. A dependency exist between two columns when
A. Together they constitute a composite key for the table
B. Knowing the value in one column determines the value stored in another column
C. The table is in 3NF
D. Together they constitute a foreign key
Answer:A
Explanation: This can be taken as a primary key . 10. A dependency exist between two columns when
A. Together they constitute a composite key for the table B. Knowing the value in one column determines the value stored in another column C. The table is in 3NF D. Together they constitute a foreign key
Explanation: Given a set F of functional dependencies on a schema, we can prove that certain other functional dependencies also hold on the schema. Sanfoundry Global Education & Learning Series – Database Management System.