how to model scd2?

[ovonel]

I need to model a scd2… Where, I would like to display in one page data based on current client, and in another based on the details of the client at the time it occurred.

I have modeled it this way...

First the data:

Fact

Sale	Client Skey	ClientEkey
345	1	1
341534	2	1
531	3	1
3145	4	1
3145	5	2
5789876543	6	2
342	7	2
44	8	2

Client

Client	Client Skey	ClientEkey	Valid
the facebook	1	1	0
fbook	2	1	0
facebook inc	3	1	0
meta	4	1	1
A	5	2	0
Adidas	6	2	0
Adidas inc	7	2	0
Adidas int	8	2	1

Both tables are connected through ClientSkey.

Then what I did in my model is just a dax code to consume/create:

Client Current (its just a subset of Client)

Client Current	Client Skey	ClientEkey	Valid
meta	4	1	1
Adidas int	8	2	1

and connect to Fact table throuh ClientEkey.

Is the model below correct then??

fact <---- Client       (SKey)

fact <---- Client Current     (Ekey)

[v-cgao-msft · Accepted solution]

Hi @ovonel ,

Are the [Client Skey] values in both tables unique? Why not create a dimension table similar to the one in the yellow box to join to both tables separately? That way, the [ClientEkey] field does not need to appear in both tables.

Good modeling is half of the success, please refer to:

Understand star schema and the importance for Power BI

Best Regards,
Gao
Community Support Team

If there is any post helps, then please consider Accept it as the solution to help the other members find it more quickly. If I misunderstand your needs or you still have problems on it, please feel free to let us know. Thanks a lot!

How to get your questions answered quickly -- How to provide sample data

[ovonel]

I need to model a scd2… Where, I would like to display in one page data based on current client, and in another based on the details of the client at the time it occurred.

I have modeled it this way...

First the data:

Fact

Sale	Client Skey	ClientEkey
345	1	1
341534	2	1
531	3	1
3145	4	1
3145	5	2
5789876543	6	2
342	7	2
44	8	2

Client

Client	Client Skey	ClientEkey	Valid
the facebook	1	1	0
fbook	2	1	0
facebook inc	3	1	0
meta	4	1	1
A	5	2	0
Adidas	6	2	0
Adidas inc	7	2	0
Adidas int	8	2	1

Both tables are connected through ClientSkey.

Then what I did in my model is just a dax code to consume/create:

Client Current (its just a subset of Client)

Client Current	Client Skey	ClientEkey	Valid
meta	4	1	1
Adidas int	8	2	1

and connect to Fact table throuh ClientEkey.

Is the model below correct then??

fact <---- Client       (SKey)

fact <---- Client Current     (Ekey)