Keys MCQ Tests
12th Class Computer Science MCQ Tests
Keys
of 12th Class Computer Science has 5 questions. If you take an online MCQ test, the system will randomly choose the questions. If you want to take the quiz by chapter then click the start test button.
Total Questions: 5
Total Marks: 5
Time: 5 Mins
Total Questions: 5
Total Marks: 5
Time: 5 Mins
5Min : 00 Sec Remaining
Question # 1
A candidate key cannot be whole of a super Key.
Question # 2
if there is no Primary key in a table then what is the best way to uniquely identify each record?
Question # 3
Identify a composite key in following table ORDER ( Order_id, Product_id, Order_quantity )
Question # 4
How many Super Keys are there in following table: Student(Rollno, Name, Mobile no, Age)
Question # 5
In Student Library Relationship , Student_roll no used in Library table is foreign key, where roll no cannot be repeated.
Total Questions
12345
Question # 1
A candidate key cannot be whole of a super Key.
Question # 2
if there is no Primary key in a table then what is the best way to uniquely identify each record?
Question # 3
Identify a composite key in following table ORDER ( Order_id, Product_id, Order_quantity )
Question # 4
How many Super Keys are there in following table: Student(Rollno, Name, Mobile no, Age)
Question # 5
In Student Library Relationship , Student_roll no used in Library table is foreign key, where roll no cannot be repeated.
Total Questions
12345
Computer Science
- Data Basics
- Basic Concepts and Terminology of Databases
- Database Design Process
- Data Integrity and Normalization
- Introduction to Microsoft Access
- Table and Query
- Microsoft Access-Forms and Reports
- Getting Started with C
- Elements of C
- Input/Output
- Decision Constructs
- Loop Constructs
- Functions in C
- File Handling
12th Class Online Classes 2026
Updated on: 17-05-2026
12th Class Online Preparation
12th Class 2026 Online
12th Class 2026
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