What are the common architectures of data warehousing?

What are the architecture of a data warehouse?

The three-tier architecture consists of the source layer (containing multiple source system), the reconciled layer and the data warehouse layer (containing both data warehouses and data marts). The reconciled layer sits between the source data and data warehouse.

What is the best data warehouse architecture?

Architecture design: Kimball or Inmon Inmon's approach is considered top down; it treats the warehouse as a centralized repository for all of an organization's data. Once there's a centralized data model for that repository, organizations can use dimensional data marts based on that model.

What are the 3 data warehouse models?

From the architecture point of view, there are three data warehouse models: the enterprise warehouse, the data mart, and the virtual warehouse. Enterprise warehouse: An enterprise warehouse collects all of the information about subjects spanning the entire organization.

What are the most common approaches in data warehousing?

There are 2 approaches for constructing data-warehouse: Top-down approach and Bottom-up approach are explained as below.1Top-down approach: The essential components are discussed below:2Bottom-up approach: First, the data is extracted from external sources (same as happens in top-down approach).