Unit 16: Distributed Databases. Data Warehousing

• fiche de synthèse - matière potentielle : data

1Unit 16: Distributed Databases. Data Warehousing Objectives – To present a brief overview of distributed databases and design issues associated with data distribution – To discuss the storage and analysis of summary data in a data warehouse Distributed Database Systems • A distributed database system is one in which data is stored at multiple nodes but all data is accessible to any authorised user • A distributed database management system achieves this while maintaining data integrity (particularly consistency)

• changes to the master table
• inaccuracy snapshot tables sql
• particular need for normalisation
• characteristic features - name
• design of distributed systems
• capabilities of a system
• transparency
• state
• data