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National data warehouse process architecture

Short answer

Architecture connects ministry sources via secure network to load manager (extract, validate), warehouse manager (clean, integrate, aggregate), national warehouse with marts, query manager (security, routing), serving ministries and public. Responsibilities: sources provide data, load manager stages, warehouse manager integrates, query manager controls access, metadata team maintains lineage, marts serve analysis, security ensures privacy, analysts mine for policy.

Nepal Government is going to build a national data center (National Data Warehouse) for running e-Governance project. Propose your own process architecture of the warehouse system and explain the responsibilities of each entity within the proposed warehouse architecture.

Assumptions

Sources are ministries and departments: citizenship (home), tax (IRD), land, health, education, transport and local governments. They use different systems and formats.

Proposed process architecture

 Ministry/Dept source systems (many, heterogeneous)
        |  secure network (e-gov network)
        v
 +-------------------------------+
 |      LOAD MANAGER             |
 | extract, validate, stage      |
 +---------------+---------------+
                 v
 +-------------------------------+
 |     WAREHOUSE MANAGER         |
 | clean, integrate, aggregate,  |
 | index, backup, archive        |
 +---------------+---------------+
                 v
 +-------------------------------+
 | National Data Warehouse       |
 | detail | summary | metadata   |
 | Marts: Health, Edu, Tax, Land |
 +---------------+---------------+
                 v
 +-------------------------------+
 |      QUERY MANAGER            |
 | security, routing, scheduling |
 +---------------+---------------+
                 v
  Ministries | Planning Commission | Public portal

Responsibilities

EntityResponsibility
Source departmentsProvide accurate data, define business rules, maintain source systems
Load managerExtract, validate and move data on schedule to staging
Warehouse managerCleaning, standard codes (e.g. national ID, district code), integration, summaries, backup, archive, metadata
Query managerControl access by role, route and schedule queries, audit log
Metadata teamMaintain data dictionary and lineage
Data martsServe ministry-specific analysis
Security / adminAuthentication, encryption, privacy, disaster recovery
Analysts and usersReports, OLAP, data mining for policy making
Governing bodyData standards, policy and legal compliance

✓ Answer checked by Claude Opus 5.5 (high effort)

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