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Posted Aug 7, 2006

Mastering Enterprise BI: Introduction to Perspectives - Page 5

By William Pearson

Create a Cube with Basic Objects

Create a Cube

We will create a basic cube, with measures we will add as a part of cube creation, within which we will create the Perspectives which form the focus of our practice session. We will concentrate upon other areas within the overall design and creation process in other articles of the series – our primary objective here is to gain some familiarity with Perspectives – not to concern ourselves with the myriad other options and topics contained within general cube design and development.

1.  Right-click the Cubes folder within the Solution Explorer.

2.  Select New Cube ... from the context menu that appears, as depicted in Illustration 23.


Illustration 23: Select New Cube to Begin Cube Creation

The Welcome to the Cube Wizard dialog appears, as shown in Illustration 24.


Illustration 24: The Welcome to the Cube Wizard Dialog Appears ...

3.  Click Next.

4.  Ensure that Build the cube using a data source checkbox is selected on the Select Build Method dialog that appears next, along with the Auto build checkbox, and with Create attributes and hierarchies selected in the drop-down selector underneath the Auto build setting.

These default settings are depicted in Illustration 25.


Illustration 25: Ensuring the Default Settings on the Select Build Method Dialog

5.  Click Next.

6.  Ascertain that the Data Source View we have created, Adventure Works DW, is selected within the Available data source views list on the left side of the Select Data Source View dialog, which appears next. (The tables contained within the Data Source View are displayed on the right side of the dialog).

The Select Data Source View dialog appears, as shown in Illustration 26.


Illustration 26: Select AdventureWorks DW as the Data Source View

7.  Click Next.

The Cube Wizard begins scanning the relational schema, identifying fact and dimensional tables, as indicated on the Detecting Fact and Dimension Tables page that appears next. We quickly receive a message indicating that the Wizard has completed its analysis of the relationships between tables in the Data Source View, and that it proposes its suggestions on the following page, as depicted in Illustration 27.


Illustration 27: The Detecting Fact and Dimension Tables Page Indicates Completion ...

8.  Click Next.

The Identify Fact and Dimension Tables dialog next appears. Let's select a Time dimension table, and narrow the table selection somewhat, for the purposes of our rudimentary cube.

9.  Select the DimTime table in the drop-down Time dimension table selector.

10.  Uncheck the following checkbox:

Dimension Column: DimCurrency

NOTE: We can also make table selections graphically via the Diagram tab of the Identify Fact and Dimension Tables dialog.

The Identify Fact and Dimension Tables dialog appears, as shown in Illustration 28.


Illustration 28: The Identify Fact and Dimension Tables Dialog, with Our Modifications

11.  Click Next.

The Select Time Periods dialog appears.

12.  Leaving any unspecified columns blank, select the Time Table Columns values shown in Table 1 for each of the listed Time Property Names.

Time Property Name

Time Table Columns

Year

CalendarYear

Quarter

CalendarQuarter

Month

EnglishMonthName

Date

FullDateAlternateKey


Table 1: Selections within Respective Time Table Columns in Select Time Periods Dialog

The Select Time Periods dialog appears, with our selections, as depicted in Illustration 29.


Illustration 29: The Select Time Periods Dialog, with Our Selections

13.  Click Next.

The Select Measures dialog appears next.

14.  Uncheck the following checkboxes:

  • Revision Number
  • Discount Amount
  • Product Standard Cost
  • Tax Amt
  • Freight

The Select Measures dialog appears, as partially shown in Illustration 30.


Illustration 30: The Select Measures Dialog (Partial View), with Adjusted Selections

15.  Click Next.

The Detecting Hierarchies page appears next, as hierarchy detection begins. We receive rapid indication that dimension tables have been scanned and hierarchies detected, as depicted in Illustration 31.



Illustration 31: The Detecting Hierarchies Page, with Indication of Relationships Detected

16.  Click Next.

We move to the Review New Dimensions page, which appears as shown in Illustration 32.


Illustration 32: The Review New Dimensions Page

17.  Click Next.

The Completing the Wizard page appears next.

18.  Change the default Cube name to the following:

ANSYS050 – Perspective 

The Completing the Wizard page appears as depicted in Illustration 33.


Illustration 33: The Completing the Wizard Page

19.  Click Finish.

The Wizard concludes, and the Cube Designer opens, as shown in Illustration 34.


Illustration 34: The Cube Designer Opens ...



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