The document discusses the fundamentals of transaction systems in clustered databases. It covers 1) the importance of serialization and locking to avoid issues like write skew and wormholes, 2) how relativity challenges the classical view of replication by highlighting issues like clock synchronization, 3) how practical solutions are optimized through simplicity and removing unnecessary complexity, and 4) how certainty is balanced with accounting for uncertainty through techniques like failure recovery.

1. Valverde Computing The Fundamentals of Transaction Systems Part 1: Causality banishes Acausality (Clustered Database) C.S. Johnson <cjohnson@member.fsf.org> video: http://ValverdeComputing.Com social: http://ValverdeComputing.Ning.Com 1- The Open Source/ Systems Mainframe Architecture

2. 1- Library = Low level communication, operating system drivers and state on Open Systems platforms Subsystems = Open Source components + middleware standards + Customer Application Cores EAI = commerce brokers, data integration & rules engines, enterprise mining, web analytics, ETL and data cleansing tools Optimal Cluster Software Architecture

3. 1- Library = Low level communication, operating system drivers and state on Open Systems platforms State Optimally includes a proprietary layer of low level, C/C++ based drivers, yielding unparalleled transaction processing performance without the client having to deal with the underlying design architecture. These libraries provide a simple and unobstructive, yet elegant and abstract data management interface for new applications. Libraries ESS, WAN, LAN, SAN drivers and management library Global serialization library XML log records library Buffered log I/O library XML log reading library Cluster logging library Recovery library XML chains resource manager Global Transaction (IDs, handles and types) library Data management library Transaction management library XML remote scripting API library Computer, Cluster and Network management library

5. 1- EAI = commerce brokers, data integration & rules engines, enterprise mining, web analytics, ETL and data cleansing tools Enterprise Application Integration Actional Control Broker Acxiom AbiliTec™ Fair Isaac Blaze Advisor Mercator Commerce Broker MicroStrategy DoubleClick Ensemble SAS Enterprise Miner ETL Tools SeeBeyond® TIBCO Trillium

6. 1- High Speed, Minumum Latency Network or SAN “B” Cluster Redundancy Architecture High Speed, Minumum Latency Network or SAN “A” * Elements can be viewed as computers in a cluster, or as clusters in a group Fibre Channel or SAN Based Enterprise Storage Network “B” Fibre Channel or SAN Based Enterprise Storage Network “A”