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DBMS Foundations

Introduction

Start with the role of a DBMS and the shape of the course.

Architecture

The major internal layers of a DBMS and why they exist.

Transactions and Recovery

ACID Properties

A revision page covering atomicity, consistency, isolation, and durability.

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Advanced DBMS

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Advanced DBMS

Architecture

The major internal layers of a DBMS and why they exist.

A classical DBMS is often described in layers: query processor, optimizer, transaction manager, storage manager, and buffer manager.

Why the layering matters

  • each layer isolates complexity

  • each layer exposes a stable contract to the next

  • performance tuning usually happens at the seams between layers