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, …
Axioms of Functional Dependencies in DBMS The Axioms of Functional Dependencies (also known as Armstrong’s Axioms) are a set of rules used to infer all possible functional dependencies from a given set of FDs. These axioms are sound (valid) and …
Question 1: Functional Dependencies Suppose the following functional dependencies hold on a relation V with attributes A, B, C, D, and E: A → BC CD → E Which of the following functional dependencies can be inferred from the above …
Introduction to Database Management Systems (DBMS) What is a Database Management System (DBMS)? A Database Management System (DBMS) is a software system designed to manage a collection of interrelated data and provide efficient access to that data. The primary …
Solved Problems on Keys and Super Keys Introduction Understanding keys and super keys is essential for mastering Database Management Systems (DBMS). These solved problems will help you grasp how to calculate the number of super keys in different scenarios, …
Why Not Simply Use Files? Introduction File systems are often the first choice for storing data when learning basic programming. Languages like C, C++, Python, and Java offer robust file-handling functionalities with commands like fopen, fprintf, and fscanf. However, …
GATE CSE 1987 Question 2n: Mastering Functional Dependencies in Databases Are you preparing for GATE CSE and struggling with database concepts? Let’s dive deep into a classic question from GATE CSE 1987 that tests your understanding of functional dependencies. This …
