Relational Algebra Question with Solution Question Suppose relation R(ABC) has the following tuples: A B C 1 2 3 1 2 3 3 2 1 How many tuples are resulted by the given RA expression? πAB(R) ⋈R.B < S.B ρS(A, …
C Programming Reference Operator Precedence Table Operator Description Associativity () [] -> . Function call, array subscripting, member access Left to Right ++ — + – ~ ! Increment, decrement, unary plus, minus, bitwise NOT, logical NOT Right …
Understanding ER Diagrams and Relational Mapping in DBMS Question: Which of the following statements is true about the above ER diagram? The minimum number of relations required for the above ER diagram is 2. Attribute C will be present as …
Conflict and View Serializability in DBMS – Practice Question Question: Which of the following are true? A: All view serializable schedules are conflict serializable as well. B: All conflict serializable schedules are view serializable as well. C: If a …
Conflict Serializability: Detailed Explanation with Example Question: Consider the following schedule: S₁: R₁(A); R₁(C); R₂(B); W₂(B); R₃(B); R₁(A); R₃(C); W₃(C); W₁(A) S₂: R₂(A); R₁(C); R₂(B); R₃(B); W₂(B); R₁(A); R₃(C); W₃(C); W₁(A) Which of the above schedules is conflict serializable? …
Q1: What are the potential problems when a DBMS executes multiple transactions concurrently? Question: What are the potential problems when a DBMS executes multiple transactions concurrently? Phantom problem The dirty read problem Unrepeatable read problem All of the above Answer: …
Top GATE, UGC NET, NIELIT, and ISRO Practice Questions with Solutions Prepare effectively for competitive exams like GATE, UGC NET, NIELIT, and ISRO with our carefully curated practice questions. Each question is provided with a detailed solution, step-by-step analysis, and …
Extended Relational Algebra: Features and GATE Questions Extended Relational Algebra Explore advanced operations like arithmetic functions, aggregates, and grouping that enhance basic relational algebra capabilities. Introduction Extended Relational Algebra introduces advanced operations like generalized projection, aggregate functions, and grouping, essential …
Outer Joins in Relational Algebra Outer Joins in Relational Algebra Explore the Left Outer Join, Right Outer Join, and Full Outer Join to retain unmatched tuples in relational operations. Introduction Outer Joins are extensions of the Join operation in relational …
Division Operation in Relational Algebra Division Operation in Relational Algebra A guide to solving “for all” type queries using the division operation in relational algebra. Introduction The Division Operation is a binary operation in relational algebra that answers “for all” …
Natural Join in Relational Algebra Natural Join in Relational Algebra An efficient and simplified way to combine tables using common attributes. Introduction The Natural Join (symbolized by ⋈) is a specialized join operation in relational algebra that automatically combines two …
Understanding the Join Operation in Relational Algebra The Join Operation in Relational Algebra Learn the fundamentals and applications of the Join operation, a critical concept in relational algebra and database management. Introduction The Join operation, symbolized by ⋈, is a …
