Question
Relations R and S share the same schema, with R having 50 tuples and S having 50 tuples. If R and S share exactly 20 common tuples, how many tuples will the result of (R UNION
- S MINUS (R INTERSECT
- S contain?
More IT DBMS Questions
- Which deadlock prevention scheme allows older transactions to preempt younger ones?
- What will be the value of `x` after the following pseudo-code execution? ``` x = 0 data = [10, 20, 30] for item in data: if item ...
- Which type of SQL JOIN returns all records from both tables, filling unmatched fields with NULL?
- A relation Employee(EmpID, Skill, Language) records that an employee can have multiple independent skills and can speak multiple independent languages, wit...
- Consider a scenario in an OOP application where a `NullPointerException` (or equivalent) occurs when trying to access a member of an object. What is the mo...
- A relation Student_Course(StudentID, CourseID, StudentName, CourseName) stores StudentName redundantly in every row for each course a given student takes. ...
- Given relations Enrolled(Student, Course) and AllCourses(Course), which relational algebra operation correctly finds students enrolled in ALL courses liste...
- A relation R(A, B, C, D, E) has the composite candidate key {A, B}, and the functional dependencies AB→C, AB→D, and AB→E hold. No other functional dependen...
- In DBMS, which scheduling method ensures serializability of transactions?
- T1 updates a row but has not committed; T2 reads that updated value; T1 then rolls back. What anomaly did T2 experience?
Hey! Ask a query
Please enter email id
The email must be a valid email address.
Please enter Mobile Number
Please enter valid Mobile Number
Please enter your Doubt
Think You're Ready for RBI Grade B?
RBI Grade B 2026 Phase 1 Memory Based Paper
- 200 Questions with Detailed Solutions
- Section-wise Coverage (GA, English, Quant & Reasoning)