Home / Data Warehousing

Slowly Changing Dimensions ( SCD Type I/II/III )

Rating: 4.0Blog-star
Views: 3044
by Himanshika Sharma
Last modified: February 27th 2021

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
Enhance your IT skills and proficiency in Data Warehousing by taking up the Informatica Training.

In OLTP

OLTP

In DWH

DWH

  • Active record is where end date is null
  • History
  • Active status(Active record – Max Version)
  • Change No (Version)
  • Duration (Time stamp)
Explore Informatica Sample Resumes! Download & Edit, Get Noticed by Top Employers!Download Now!

 

 

About Author

author
NameHimanshika Sharma
Author Bio

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