View the new MCQs of Computer Science for the upcoming 2021 examinations at Computer MCQs Class 11 NEW
Category: Computer Science MCQs Class 11
Computer Science solved multiple choice questions (MCQs) for class 11 or first year with answers.
Latest MCQs of Computer for Class 11
View the new MCQs of Computer Science for the upcoming 2021 examinations at Computer Science MCQs Class 11 NEW
The (Student-ID) field is a primary key in “STUDENT” table. The (student-ID) in related “EXAM” table is called as:
(A) Candidate key
(B) Secondary key
(C) Alternate key
(D) Foreign key
Answer: (D) Foreign key
What is the degree of relationship between entities AUTHOR and BOOK ?
(A) Unary
(B) Binary
(C) Ternary
(D) Recursive
Answer: (B) Binary
A relation consist of 10 attributes and 100 tuples then the degree of relation is:
(A) 1
(B) 10
(C) 100
(D) 1000
Answer: (B) 10