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Consider a database that has the relation schema Random(A, B, C). An instance of the schema Random is as given below.
Tuple calculus expression for the above instance is given as  {t.B | t ϵ r ∧ (t[A] = 10  ∧ t[C] = 7)}
What is the sum of the elements in the output row of the given expression?
    Correct answer is '32'. Can you explain this answer?
    Verified Answer
    Consider a database that has the relation schema Random(A, B, C). An i...
    To solve the given problem, we need to understand the Tuple Relational Calculus (TRC) expression and apply it to the given relation schema. Let's go step-by-step.
    1. Understanding the TRC Expression:
      • The TRC expression given is: {��.��∣��∈��∧(��[��]=10∧��[��]=7)}{t.B∣t∈r∧(t[A]=10∧t[C]=7)}
      • This expression means we need to find all tuples ��t in relation ��r where:
        • The value of attribute ��A is 10.
        • The value of attribute ��C is 7.
      • From those tuples, we need to select the value of attribute ��B.
    2. Analyzing the Relation Schema:
      • The relation schema is Random(A, B, C).
      • The given instance of the schema Random is: 
      • A    B    C
        10   10   7
        10    7  10
         7   10   7
        10    7   7
        10   13   7
        13   10   7
        10    7  13
        10    2   7
         
    3. Applying the TRC Expression to the Relation:
    4. We need to find all rows where ��=10A=10 and ��=7C=7.
    5. Let's filter those rows
    A    B    C
    10   10   7
    10    7   7
    10   13   7
    10    2   7
     
    Selecting the Attribute ��B:
    • From the filtered rows, we extract the values of attribute ��
    B
    10
     7
    13
     2
    1. Summing the Elements:
      • We need to find the sum of these values: 10+7+13+2=3210+7+13+2=32
    Therefore, the sum of the elements in the output row of the given expression is 32.
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    Consider a database that has the relation schema Random(A, B, C). An instance of the schema Random is as given below.Tuple calculus expression for the above instance is given as {t.B | t r ∧ (t[A] = 10 ∧ t[C] = 7)}What is the sum of the elements in the output row of the given expression?Correct answer is '32'. Can you explain this answer?
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    Consider a database that has the relation schema Random(A, B, C). An instance of the schema Random is as given below.Tuple calculus expression for the above instance is given as {t.B | t r ∧ (t[A] = 10 ∧ t[C] = 7)}What is the sum of the elements in the output row of the given expression?Correct answer is '32'. Can you explain this answer? for Computer Science Engineering (CSE) 2024 is part of Computer Science Engineering (CSE) preparation. The Question and answers have been prepared according to the Computer Science Engineering (CSE) exam syllabus. Information about Consider a database that has the relation schema Random(A, B, C). An instance of the schema Random is as given below.Tuple calculus expression for the above instance is given as {t.B | t r ∧ (t[A] = 10 ∧ t[C] = 7)}What is the sum of the elements in the output row of the given expression?Correct answer is '32'. Can you explain this answer? covers all topics & solutions for Computer Science Engineering (CSE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider a database that has the relation schema Random(A, B, C). An instance of the schema Random is as given below.Tuple calculus expression for the above instance is given as {t.B | t r ∧ (t[A] = 10 ∧ t[C] = 7)}What is the sum of the elements in the output row of the given expression?Correct answer is '32'. Can you explain this answer?.
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