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 …
Are you preparing for GATE CSE, NTA UGC NET, ISRO, or NIELIT Computer Science exams? Understanding DBMS and mastering SQL is crucial for scoring high in competitive exams. This article contains carefully selected practice questions on functional dependencies, normalization (3NF …
Prepare for NTA UGC NET Computer Science with these carefully curated questions covering SQL queries, relational algebra, entity-relationship models, foreign keys, normalization, and more. This comprehensive guide provides concept clarity and includes essential topics like referential integrity, joins (INNER and …
Question 1: Rent Payment Management in Hotel System Consider the entities ‘Apartment’ and ‘Tenant’ with a many-to-many relationship ‘Lease’ as shown below: If we wish to store information about the monthly rent paid by tenants occupying different apartments, this information …
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 …
Entity-Relationship Diagrams (ERD) Entity-Relationship Diagrams (ERDs) are fundamental tools in database design, offering a clear and graphical way to represent the logical structure of a database. In this detailed guide, we will cover all aspects of ERDs, focusing on …
Removing Redundant Attributes in Entity Sets One of the critical steps in database design using the Entity-Relationship (E-R) model is ensuring the elimination of redundant attributes in entity sets. This process helps to optimize the design, avoid data duplication, …
Relationship Sets in E-R Model The Entity-Relationship (E-R) Model is a cornerstone in database design, helping to define how entities relate to one another. For aspirants of GATE, UGC NET, NIELIT, ISRO, and other competitive exams, understanding relationship sets …
The Entity-Relationship Model (E-R Model): A Comprehensive Guide The Entity-Relationship (E-R) Model plays a critical role in database design, enabling the creation of an enterprise schema that represents the overall logical structure of a database. This model simplifies mapping real-world …
Overview of the Database Design Process The process of creating a database application involves designing the database schema, developing programs to access and update data, and implementing a security mechanism to control access. The success of the design heavily …
Comprehensive DBMS Summary | Notes for Competitive Exams Comprehensive DBMS Summary This comprehensive summary of Database Management Systems (DBMS) highlights key concepts, features, and architectural insights. Perfect for aspirants preparing for GATE, UGC NET, ISRO, NIELIT, and other competitive exams. …
History of Database Systems | DBMS Notes for Competitive Exams History of Database Systems Databases have revolutionized the way we store and process information. From the early days of magnetic tapes to the emergence of cloud-based distributed databases, the journey …
