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1answer
12 views

Dimensional Model for inheritance in dimensions

How are dimensions typically modeled in a dimensional model if one dimension logically inherits from another dimension? For example, assume I have an Employee dimension and a Driver dimension, where ...
0
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1answer
26 views

Does processing required dimensions is enough or to process the entire cube?

I have four large dimensions and one of the dimension is not going to be changed, also the particular dimension didn't need to be processed. So, processing the three dimensions individually updates ...
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0answers
15 views

Process dimension task is querying the wrong column!

I'm in the process of building a new data warehouse and I am starting out by building a few dimensions. I have created a fairly typical "Date" dimension and that seems ok. Now I am trying to create ...
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0answers
24 views

How to avoid processing for a dimension when we process the cube?

I have a dimension and a measure group whose data is only historical data and will never get changed. So, as I process the cube everyday it's getting processed along with it and it may be degrade the ...
0
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1answer
62 views

How to optimize performance for dimension attributes?

I'm looking to enhance the cube processing time and someone suggested me to set "AttributeHierarchyEnabled='False'" for attributes which were not used at user defined hierarchies but I'm not clear ...
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vote
3answers
76 views

Data Warehouse measures without a corresponding dimension

I have an operations database that contains this table: salesQuality salesPrice salesCategory According to my business requirements, the salesQality and salesPrice are measures. However, ...
2
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1answer
5k views

Best approach for populating date dimension table

I am looking to populate a date dimension table in a SQL Server 2008 database. The fields in the table are as follows: [DateId] INT IDENTITY(1,1) PRIMARY KEY [DateTime] ...
0
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1answer
88 views

Override Dimension Column Value

I have a dimension with a column called 'Type'. There is a list of default 'Types' in this dimension. However, this 'Type' column can be overriden. i.e. each user can replace the default value with ...
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2answers
1k views

Datawarehouse - Dimension, Fact, or Degenerative dimension

I am building a warehouse for a billing system that bills a number of services/utilities on the same invoice, as such I am having real trouble conforming to a recognised design method for the ...
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0answers
47 views

How to remove leaf member values?

I have a dimension hierarchy that is related to multiple fact tables with different granularities. In the case of one fact table, it relates to the middle level of a three level hierarchy. When you ...
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vote
0answers
337 views

How to aggregate calculated measures involving dimension attributes?

The business case is as follows - I have a cube of sales transactions and a dimension of parts. One of the attributes of a part is the current cost, which is non-aggregatable. A user needs to model ...
4
votes
2answers
608 views

Open source and commercial tools to build dynamic queries of fact tables in star schema [closed]

What user interfaces or tools (commercial and/or open source) can query a star schema model (Ralph Kimball dimensional model)? So for example, if we have X fact tables, and Y dimension tables, and Z ...
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2answers
744 views

Data warehouse support tickets

I'm starting to design a data warehouse for a company. The first questions we're trying to resolve are regarding their support ticketing system. My initial schema is as follows Now one of the ...
2
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1answer
2k views

In star schemas, what should I do when a dimension has a date attribute?

I'm trying to learn about dimensional models and star schemas. Say I have a Sales fact table recording the total sales at retail stores, with, say, four dimensions, Date, Customers, Stores, and ...
8
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1answer
252 views

Dimension and Fact for same entities?

I'm rather new at DW design and am working on a DW to model some IT infrastructure. The major problem/question at this point is how to model drive information. We will be collecting aggregate data ...
2
votes
1answer
1k views

Does surrogate key assignment for a fact table require that the source data has natural keys?

Let's say I have a simple OLTP database with orders, products, and customers: And from it, I am building a data mart with an orders fact table, product dimension, customer dimension, and date ...
7
votes
1answer
190 views

Dynamic Dimension Security

I have a cube in SSAS 2012 with about 30 dimensions, one of which is Company. The Company dimension contains a list of companies, of which there are several hundred in the cube. Our security model ...
15
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3answers
5k views

Dynamically Define a Range in a Dimension

I have an issue that i face every time i decide to build a cube, and i haven't found a way to over come it yet. the issue is how to allow the user to define Range of things automatically without ...