Master the foundational concepts of databases, from data organization and SQL queries to advanced topics like normalization and transaction management.
Understanding Data vs Information, Database definitions, and why we need DBMS over File Systems.
Three Schema Architecture, Data Independence, Schemas & Instances, and Database Languages.
Entity, Attributes, Relationships, Strong vs Weak Entities, and ER Diagram Symbols.
Keys, Constraints, and the foundational structure of RDBMS tables, tuples, and relationships.
Complete guide to SQL: Core Concepts, Terminologies, and Commands (DQL, DDL, DML, etc.).
Functional Dependencies, Anomalies, and Normal Forms (1NF, 2NF, 3NF, BCNF) to reduce data redundancy.
Understand transactions, the critical ACID properties (Atomicity, Consistency, Isolation, Durability), and the lifecycle states of a transaction.