August 2017
Beginner to intermediate
426 pages
9h 36m
English
Content preview from Learning Informatica PowerCenter 10.x - Second Edition
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SCD1
As you can see in the following table, INDIA will be replaced with USA, so we end up having only current data, and we lose historical data:
|
PM_PRIMARY_KEY |
EMPLOYEE_ID |
NAME |
LOCATION |
|
100 |
1001 |
STEVE |
USA |
Now if Steve is again shifted to JAPAN, the LOCATION data will be replaced from USA to JAPAN:
|
PM_PRIMARY_KEY |
EMPLOYEE_ID |
NAME |
LOCATION |
|
100 |
1001 |
STEVE |
JAPAN |
The advantage of SCD1 is that we do not consume a lot of space in maintaining the data.
The disadvantage is that we don't have historical data.
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