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Short note: DW process architecture

Short answer

The data warehouse process architecture consists of three main managers: the load manager extracts and loads source data, the warehouse manager cleans, transforms, and aggregates data, and the query manager handles user queries. These processes work together with storage areas for detailed, summary, and archival data, plus metadata.

Write a short note on DW process architecture.

The data warehouse process architecture describes the main processes (managers) that run in a warehouse and how data flows between them.

 Sources -> LOAD MANAGER -> WAREHOUSE MANAGER -> Storage
                                                   |
                          Users <- QUERY MANAGER <-+
  • Load manager (front end): extracts data from sources, does simple transformations and loads it to a staging area or warehouse.
  • Warehouse manager: runs inside the warehouse; cleans, transforms and merges data, builds indexes, views and aggregations, performs backup and archiving, and maintains metadata.
  • Query manager (back end): handles user queries, routes them to detailed or summary data, controls access, and schedules queries.
  • Storage areas: detailed data, lightly and highly summarised data, archive, and metadata.

Each process is a separate piece of software (or team) with defined responsibilities, which makes the system easier to build, manage and scale.

✓ Answer checked by Claude Opus 5.5 (high effort)

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