topic Re: Star schema in QlikView

Star schema

soniasweety — Wed, 25 Nov 2020 16:16:04 GMT

Hi All,

HIC

marcowedel‌

I have single table in my data model .

Now my user want it as Perfect star schema

example; I have Order ,product,branch three dimensions and measures too,

so user want see the datamodel with facts as fact table and dimensions as dimension tables separate and

the schema should look like start schema with single fact and surrounded by dimension table.

so how can I separate the data model from single table ?

Thanks

sony

Re: Star schema

soniasweety — Sun, 29 Jul 2018 06:17:23 GMT

Hi Bala Bhaskar

any idea?

Re: Star schema

fabdulazeez — Sun, 29 Jul 2018 07:35:36 GMT

Use multiple resident loads to create dimension table

Re: Star schema

bwisealiahmad — Sun, 29 Jul 2018 08:03:26 GMT

Hi,

What would be your fact here? Is it your Order Quantity and Value?

I made an example if that is your measures.

Determine measure columns and keys needed to connect dimension tables.
Connect dimension tables and bring in the describing columns you want to describe your facts.

Here is an example with order measures as fact and I added the rest of the tables as a dimension. I made the dimension tables loaded distinctly as you only need each value once there.

Fact:

LOAD

Prodcut_ID,

BranchID,

OrderID,

OrderQty,

OrderValue

FROM

(ooxml, embedded labels, table is Sheet1);

DIM_Product:

LOAD Distinct

Prodcut_ID,

Productname,

ProductQty,

Productvalue,

Prodcutcategory,

ProductType

FROM

(ooxml, embedded labels, table is Sheet1);

DIM_Branch:

LOAD Distinct

BranchID,

BranchQty,

BranchName,

BranchValue,

BranchCategory,

BranchType

FROM

(ooxml, embedded labels, table is Sheet1);

DIM_Order:

LOAD Distinct

OrderID,

OrderName,

OrderCategory,

OrrdetType

FROM

(ooxml, embedded labels, table is Sheet1);

Best,

Ali A

Re: Star schema

soniasweety — Sun, 29 Jul 2018 10:19:28 GMT

can you exaplin more or sample is attached

Re: Star schema

soniasweety — Sun, 29 Jul 2018 10:22:30 GMT

thanks ali...

so now I have 8 rows of data.... for example

I need to increase that data to 100 times it means 800 rows I want to populate how can I achieve that?

Re: Star schema

bwisealiahmad — Sun, 29 Jul 2018 10:36:22 GMT

Hi,

Not sure what you mean by populate?

I've used the data you gave as an example so now you have to apply the same logic to your full dataset.

Best,

Ali A

Re: Star schema

BalaBhaskar_Qlik — Sun, 29 Jul 2018 13:27:39 GMT

May be something like this:

Load

AutoNumber(RowNo(),WeekDayNo) as Sequence

From ABC;

LOAD *,

AutoNumber(RecNo(),AutonumberHash128(AddressNumber,WeekNo,WeekDayNo)) as Sequence

FROM ABC;