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Computer Science - Class 12
Solutions to CBSE Sample Paper - Computer Science Class 12

In a relational data model, a relation R has degree 4 and cardinality 10, and a selection operation is applied on R to obtain a relation S with cardinality 5. What is the degree of S? 

  1. 4

  2. 10 

  3. 20


Answer by student

a. 4

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.