Explain What are slowly changing dimensions?
Submitted by: AdministratorSCD stands for Slowly changing dimensions. Slowly changing dimensions are of three types
SCD1: only maintained updated values.
Ex: a customer address modified we update existing record with new address.
SCD2: maintaining historical information and current information by using
A) Effective Date
B) Versions
C) Flags
or combination of these
scd3: by adding new columns to target table we maintain historical information and current information
Submitted by: Administrator
SCD1: only maintained updated values.
Ex: a customer address modified we update existing record with new address.
SCD2: maintaining historical information and current information by using
A) Effective Date
B) Versions
C) Flags
or combination of these
scd3: by adding new columns to target table we maintain historical information and current information
Submitted by: Administrator
Read Online General Datawarehousing Job Interview Questions And Answers
Top General Datawarehousing Questions
☺ | What is SCD1 , SCD2 , SCD3? |
☺ | What is ODS? |
☺ | Explain piconet? |
☺ | Explain the Difference between OLTP and OLAP? |
☺ | Explain What are the Different methods of loading Dimension tables? |
Top Data Warehouse Job Categories
☺ | Warehouse Assistant Interview Questions. |
☺ | Ab Initio Interview Questions. |
☺ | Data Stage Interview Questions. |
☺ | ColdFusion Interview Questions. |
☺ | Data Warehouse Supervisor Interview Questions. |