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What are the three steps in building a data warehouse?

Contents
  1. What are the steps in building a data warehouse?
  2. What are the 3 steps in moving data to the data warehouse environment?
  3. What are the 3 characteristics of data warehouse?
  4. What are the three layers of data warehouse?
In general, building any data warehouse consists of the following steps: Extracting the transactional data from the data sources into a staging area. Transforming the transactional data. Loading the transformed data into a dimensional database. 11 янв. 2002 г.


What are the steps in building a data warehouse?

7 Steps to Data Warehousing1Step 1: Determine Business Objectives. ... 2Step 2: Collect and Analyze Information. ... 3Step 3: Identify Core Business Processes. ... 4Step 4: Construct a Conceptual Data Model. ... 5Step 5: Locate Data Sources and Plan Data Transformations. ... 6Step 6: Set Tracking Duration. ... 7Step 7: Implement the Plan.

What are the 3 steps in moving data to the data warehouse environment?

Step 1) Extraction. In this step of ETL architecture, data is extracted from the source system into the staging area. ... Step 2) Transformation. Data extracted from source server is raw and not usable in its original form. ... Step 3) Loading.

What are the 3 characteristics of data warehouse?

The Key Characteristics of a Data Warehouse Large amounts of historical data are used. Queries often retrieve large amounts of data. Both planned and ad hoc queries are common.

What are the three layers of data warehouse?

Data Warehouses usually have a three-level (tier) architecture that includes:Bottom Tier (Data Warehouse Server)Middle Tier (OLAP Server)Top Tier (Front end Tools).

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