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Any organization that uses the Oracle relational database management system (RDBMS) these days needs to use multiple databases. There are many reasons to use more than a single database in a distributed database system- *Different databases may be associated with particular business functions, such as manufacturing or human resources. *Databases may be aligned with geographical boundaries, such as a behemoth database at a headquarters site and smaller databases at regional offices. *Two different databases may be required to access the same data in different ways, such as an order entry database whose transactions are aggregated and analyzed in a data warehouse. *A busy Internet commerce site may create multiple copies of the same database to attain horizontal scalability. *A copy of a production database may be created to serve as a development test bed. In a distributed database environment, data in two or more databases is accessible as if it were in a single database. Usually, the different databases are on different servers, which may be located at the same site or a continent away. Communication between the servers takes place via SQL*Net (for Oracle7) or Net8 (for Oracle8). Distributed database environments offer a number of benefits over single- database systems, including- *Tunability *Platform autonomy *Fault tolerance *Scalability *Location transparency *Site autonomy *Enhanced security This book describes how you can use multiple databases and the distributed features of Oracle to best advantage. It covers- Table of contents- Part I- The Distributed System 1. Introduction to Distributed Database Systems 2. SQL*Net and Net8 3. Configuration and Administration 4. Distributed Database Security 5. Designing the Distributed System 6. Oracle's Distributed System Implementation 7. Sample Configurations 8. Engineering Considerations Part II- Replication 9. Oracle Replication Architecture 10. Advanced Replication Option Installation 11. Basic Replication 12. Multi-Master Replication 13. Updateable Snapshots 14. Procedural Replication 15. Conflict Avoidance and Resolution Techniques Part III- Appendixes Appendix A- Built-in Packages for Distributed Systems Appendix B- Scripts

Detalhes do Produto

    • Ano de Edição: 1999
    • Ano:  1999
    • País de Produção: United States
    • Código de Barras:  9781565924321
    • ISBN:  1565924320
    • Encadernação:  BROCHURA
    • Complemento:  DISQUETE
    • Nº de Páginas:  548

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