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- Data Acquisition – ETL Process In Data Warehousing
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- Types Of Facts In Data Warehouse
- Types Of Tables In DWH: Facts And Dimensions
- What Are Differences Between OLTP And DWH?
- What is Confirmed, Shrunk Dimensions
- What Is Data Mart?
- Data Warehousing?
- OLTP VS OLAP - Difference between OLTP and OLAP
Slowly Changing Dimensions (SCD’s)
SCD is a dimension which captures the changes that occur over a period of time.
- Type I – Contains only current data. Change in source is overwritten
- Type II-Maintains complete history + Current data
- Type III-Partial (recent) history + Current data
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In OLTP
In DWH
- Active record is where end date is null
- History
- Active status(Active record – Max Version)
- Change No (Version)
- Duration (Time stamp)
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Last updated: 28 Sep 2024
About Author
Although from a small-town, Himanshika dreams big to accomplish varying goals. Working in the content writing industry for more than 5 years now, she has acquired enough experience while catering to several niches and domains. Currently working on her technical writing skills with Mindmajix, Himanshika is looking forward to explore the diversity of the IT industry. You can reach out to her on LinkedIn.
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