One-to-One, One-to-Many Table Relationships in SQL Server
Conceptually, a many-to-many dimensional relationship in Analysis In SQL Server Data Tools, in a multidimensional project, create a data. Suposse I am using a SQL platform and want to implement a relationship of cardinality one-to-zero-or-one (). This situation would pertain. On the Format menu of SQL Server Data Tools, point to Auto Layout, and Enabling the Unknown Member, Defining Attribute Relationships.
If you have the source data that is, the Adventure Works sample data warehouse installed on a relational database engine instance, you can follow these steps. Create a Data Source View using the following existing tables: This is a requirement for establishing a link to the intermediate measure group in a subsequent step. Note If the underlying data source does not provide primary and foreign key relationships, you can create the relationships manually in the DSV.
The following example confirms that the tables used in this procedure are linked using primary keys. Create a new dimension based on existing table, DimSalesReason. Accept all of the default values when specifying the source. For attributes, select all.SQL Server 7 - One-to-One Relationship
Create a second dimension based on existing table, Fact Internet Sales. Although this is a fact table, it contains Sales Order information. We'll use it to build a Sales Order dimension.
In Specify Source Information, you will see a warning that indicates a Name column must be specified.
Choose SalesOrderNumber as the Name. On the next page of the wizard, choose the attributes. In this example, you can select just SalesOrderNumber.
Rename the dimension to Dim Sales Orders, so that you have a consistent naming convention for the dimensions. Right-click Cubes and select New Cube. You are choosing FactInternetSales because it contains the measures you want to use in the cube. You are choosing FactInternetSalesReason because it is the intermediate measure group, providing member association data that relates sales orders to sales reasons.
Define a Many-to-Many Relationship and Many-to-Many Relationship Properties
Choose measures for each fact table. To simplify your model, clear all the measures, and then select just Sales Amount and Fact Internet Sales Count at the bottom of the list. The FactInternetSalesReason only has one measure, so it is selected for you automatically.
You do not need this dimension, so you can clear it from the list. Name the cube and click Finish. Recall that the following icon indicates a many-to-many relationship. You can see that this dialog box is used to specify a many-to-many relationship.
If you were adding dimensions that had a regular relationship instead, you would use this dialog box to change it to many-to-many. Deploy the project to an Analysis Services multidimensional instance.
In the next step, you will browse the cube in Excel to verify its behaviors. Testing Many-to-Many When you define a many-to-many relationship in a cube, testing is imperative to ensure queries return expected results. You should test the cube using the client application tool that will be used by end-users. In this next procedure, you will use Excel to connect to the cube and verify query results.
Browse the cube in Excel Deploy the project and then browse the cube to confirm the aggregations are valid. Enter the name of the server, choose the database and cube.
- One-to-One, One-to-Many Table Relationships in SQL Server
- Lesson 4-7 - Defining the Unknown Member and Null Processing Properties
Create a PivotTable that uses the following: Because we are using sample data, the initial impression is that all sales orders have identical values. However, if you scroll down, you begin to see data variation. Part way down, you can find the sales amount and sales reasons for order number SO Grand total of this particular order is Notice that the Sales Amount is correctly calculated for the order; it is Why put a sales amount under each sales reason in the first place?
The answer is that it allows us to identify the amount of sales we can attribute to each reason. Scroll to the bottom of the worksheet.
How do I create a real one-to-one relationship in SQL Server - Stack Overflow
Notice the five members of the Product Line level. Expand Components, and then expand the unlabeled member of the Model Name level. This level contains the assembly components that are used when building other components, starting with the Adjustable Race product, as shown in the following image.
With the DimProductSubcategory dbo table selected by default as the table most recently added, click Add Related Tables again.
Defining the Unknown Member and Null Processing Properties | Microsoft Docs
The DimProductCategory dbo table is added to the Included objects list. Notice that the DimProductSubcategory dbo table and DimProductCategory dbo table are linked to each other, and also to the ResellerSales table through the Product table. In the Attributes pane, change the name of this new attribute to Category.
In the Properties window, click in the NameColumn property field and then click the browse In the Attributes pane, change the name of this new attribute to Subcategory.
Create a new user-defined hierarchy called Product Categories with the following levels, in order from top to bottom: Category, Subcategory, and Product Name. Click Yes to build and deploy the project, and then click Run to process the Product dimension.
Click Close three times to close all processing dialog boxes. Notice that none of the assembly components appear. To modify the behavior mentioned in the previous task, you will enable the UnknownMember property of the Products dimension, set a value for the UnknownMemberName property, set the NullProcessing property for the Subcategory and Model Name attributes to UnknownMember, define the Category attribute as a related attribute of the Subcategory attribute, and then define the Product Line attribute as a related attribute of the Model Name attribute.
How to Handle a Many-to-Many Relationship in Database Design
These steps will cause Analysis Services to use the unknown member name value for each product that does not have a value for the SubcategoryKey column, as you will see in the following task. Click the Attribute Relationships tab. In the diagram, right-click the Subcategory attribute and then select New Attribute Relationship. Set the Related Attribute to Category. Leave the relationship type set to Flexible. In the Attributes pane, select Subcategory.
Change the NullProcessing property to UnknownMember. In the Attributes pane, select Model Name.