A comprehensive learning resource designed specifically for Mumbai University students. Master DBMS concepts with clear explanations, visual diagrams, and exam-focused practice questions.
Introduction to DBMS, characteristics, File System vs DBMS, Data abstraction, System architecture, and real-world applications.
Conceptual modeling, ER diagrams, Entity types, Attributes, Keys, Relationships, Weak entities, and Extended ER features.
Relational model concepts, Schema constraints, Keys, ER to Relational mapping, and Relational Algebra operations.
DDL, DML, DCL commands, Aggregate functions, Joins, Nested queries, Constraints, Security, and Indexing concepts.
Database design guidelines, Functional dependencies, Normalization process, and Normal Forms (1NF, 2NF, 3NF, BCNF).
ACID properties, Transaction states, Serializability, Lock-based protocols, Deadlock handling, and Log-based recovery.
All topics from the Mumbai University syllabus covered in depth
Diagrams, flowcharts, and visual aids for better understanding
Practice questions matching university exam patterns
Easy on eyes for extended study sessions
DBMS provides data abstraction, security, integrity, concurrency control, and recovery - features missing in traditional file systems.
Entities (rectangles), Attributes (ellipses), Relationships (diamonds), with cardinality ratios (1:1, 1:N, M:N).
Primary Key (unique identifier), Foreign Key (references), Candidate Key (potential primary), Super Key (contains key).
1NF (atomic values) → 2NF (no partial dependency) → 3NF (no transitive dependency) → BCNF (every determinant is key).
Atomicity (all or nothing), Consistency (valid states), Isolation (concurrent safety), Durability (permanent commits).
Growing phase (acquire locks) → Shrinking phase (release locks). Ensures serializability but not deadlock-free.