This is a simple example of SCD (Type-2) in OLAP cube. We have a Dimension table for Employee and their Departments. This dimension is an SCD. One employee worked in different department over the course of time. EmpID is business key and SID is surrogate key. DimEmpolyee table We have another dimension called DimTime. … More Slowly Changing Dimension in SSAS Cube
Try to follow these tips. Each of these topics has been explained in different websites. So, I am not going to explain them here. 1. Design Design your database efficiently (normalization, use of foreign keys, getting rid of unnecessary tables, selecting appropriate data type etc..). Clean up your database before your go LIVE! 2. Estimate Data … More 5 Tips to avoid running out of space in SQL Server Database
It’s just a simple solution to find ceiling of a measure with help of some string operation. We have a measure called [Measures].[Marks]. Now, we define a calculated measure like below: CREATE MEMBER CURRENTCUBE.[Measures].[CeilingMarks] AS CInt(Mid(cstr([Measures].[Marks]),0,InStr(cstr([Measures].[Marks]),“.”)-1))+1, VISIBLE = 1 ; It works like this; Let’s say our number is 315.5, first it finds the decimal … More Ceiling in MDX
A tree or hierarchy of my sample cube is being shown below: BFS or Level Order Traversing: with member [Measures].[x] as [Dim Category].[Parent].currentmember.level.ordinal select order(([Dim Category].[Parent].members),[Measures].[x],BASC) on 1 , [Measures].[x] on 0 from SalesCube And, here goes the output: Pre-Order traversing: By default, traversing in MDX is always in pre-order. select [Dim Category].[Parent].members on 1 … More Pre order, Post order, Level order (BFS) traversing with MDX
In part 1, we saw user defined hierarchies. For parent child hierarchy, we can use Unary Operator Column. Let’s take the same example from Part1. We have a simple cube with two dimensions called DimCompany and DimCategory, and only one measure called Sales. DimCategory table looks like this: Id CategoryItems Parent 1 Phone 4 2 Tab 4 … More Leaf members do not sum up to parent – Part 2 (parent child hierarchy)
We have a simple cube with two dimensions called DimCompany and DimCategory, and only one measure called Sales. DimCategory table looks like this: Id SubCategory Category 1 Phone Hardware 2 Tab Hardware 3 Web Applications Software The key attribute is Id and attribute relationship is Id->Sub Category->Category There is one user-defined hierarchy called “Hierarchy” in DimCategory. In BIDS … More Leaf members do not sum up to parent – Part 1 (user defined hierarchies)
Below is an MDX Query which returns the sales of different product categories: select {[Dim Category].[Category].[Category]} on 1, {[Measures].[Measure Value]} on 0 from [MY CUBE] result set returned: We can see that the maximum value is 42092.83. Using max and axis function, we can show the maximum value as a seperate measure. So, we add … More Maximum value of a measure from an MDX result set
MDX cross join function returns the cross product of two sets. For example, we have two sets A = {1,2} and B = {x,y}. After crossjoin, we get, A X B = {(1,x),(1,y),(2,x),(2,y)}. (1,x), (1,y) are individual tuples. The resultant set consists of these tuples. Now, let’s see the below mdx query which uses crossjoin … More Understanding crossjoin, set, tuples with help of SetToStr function
Hello all I am just learning DQS and would like to share a few things that I learned so far. One of them is the use of composite domains (CD). I will go straight into an example rather than wasting time on definitions. You can find lots of them in MSDN. Let’s say, you have … More Composite Domain Rules (CD Rules) in Data Correction
This is my first post on the newly added Data Quality Service of MS SQL Server. It’s about setting up synonyms in Domain Values. The steps are : 1. select “domain management” activity for your knowledge base (KB) 2. select a domain from your domain list 3. select the “domain values” tab 4. select all the values … More Set Synonyms in DQS
