: Distributed transactions must maintain Atomicity, Consistency, Isolation, and Durability, often through complex protocols like Two-Phase Commit (2PC) Three-Phase Commit (3PC) to ensure reliability. Key Technical Components

M. Tamer Özsu and Patrick Valduriez's Principles of Distributed Database Systems Core Concepts & Principles Data Distribution Alternatives

The following areas represent the primary functional layers of a distributed database system as outlined in the fourth edition: Principles of Distributed Database Systems, Third Edition

Distributed database systems (DDBMS) focus on managing collections of multiple logically interrelated databases spread across a computer network

. The following write-up covers the core principles and major components typically addressed in textbooks like

: Systems use fragmentation (horizontal or vertical) and replication to physically distribute data across sites while keeping it logically unified for the user. Consistency Models

: This fundamental principle states that a distributed system can only provide two out of three guarantees: Consistency, Availability, and Partition Tolerance. ACID Properties

: DDBMS must balance performance and accuracy using various consistency models, ranging from Strong Consistency (immediate updates across all nodes) to Eventual Consistency (nodes eventually sync over time). CAP Theorem