Tier-S: The 'Must-Do' Killers

Normalization & FDs

Database design me anomalies (errors) ko kam karne ka process.

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E-R Diagram & Relational Model

Database ka blueprint jo entities aur relationships ko visually represent karta hai.

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SQL Queries

Database se data nikalne, daalne aur update karne ki powerful language.

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Transaction Management (ACID)

Database ko bharosemand banane waale concepts: Atomicity, Consistency, Isolation, Durability.

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Tier-A: The High-Scorers

B+ Trees

Laakhon records me se data ko tezi se dhoondhne ke liye use hone waala super-index.

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Relational Algebra

SQL se pehle ki procedural query language jo set theory par based hai.

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DBMS Architecture & Basics

Three-level architecture (Physical, Logical, View) aur DBMS vs File System.

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Tier-B: The Rank Boosters

SQL Injection

Ek common web security attack jisse attacker database ka control le sakta hai.

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DDL vs DML Commands

SQL commands ke types: Data Definition (structure) aur Data Manipulation (data).

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EER Concepts

Enhanced E-R model ke advanced concepts: Generalization, Specialization, Aggregation.

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