Introduction Welcome to this comprehensive guide on “How to Start Competitive Coding?” If you’re a student, especially from a Tier 3 college in India, and you want to build a strong foundation in programming, improve your problem-solving skills, and secure …
Understanding Soundness and Completeness of Armstrong’s Axioms Question: For a set of functional dependencies (FDs) F, FAA represents the set of FDs derived using Armstrong’s Axioms, and F+ represents the closure of F. Considering the following statements: S1: FAA ⊆ …
SQL Query Analysis with Schema Schema: student(rollNo, name, degree, year, sex, deptNo, advisor): deptNo: Foreign key referencing deptId in the department relation. advisor: Foreign key referencing empId in the professor relation. department(deptId, name, hod, phone): hod: Foreign key referencing empId …
Question In a relational database, if A is a foreign key in relation R that references the primary key B in relation S, and X represents the set of non-null values in A, while Y is the set of all …
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 …
