Get indepth overview of different types of models i.e., relational model and DMR model in Cognos and their features in detail. Read for More!. You want to create a dimensionally modeled relational model from a relational data Data Sources, references to data sources defined in Cognos Manager. Creating a Framework Manager Dimensional Model – DMR. 9- Import the tables/views, Known as Query Subject in Cognos world. Identify.
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You can check all of their many functions and parameters by clicking on the tabs on the lower left-hand corner, but we will cover that some other time. AngularJS Training Learners. Since we imported all tables, creating relationships in Framework Manager would be as simple as copying the database schema. Click on Test and you should get the top n rows specified.
The highest level in the organization is CEO. A query subject in Cognos Cube Designer has similarities to the model query subject in Framework Manager. A dialog will appear. From the Available Components white area, drag fname query item from customer in Physical View to Express Definition white area to the right. A scope defines a relationship between regular dimension and measure dimension.
At least one path in the hierarchy skips at least one level.
Creating a DMR model
Your project should be structured like the following:. Presentation View this view will be presented to the business user. The modeling approach with Cognos Cube Designer is streamlined to focus entirely on the reporting application and ensure that a quality model is defined and deployed.
Uniquely identifies means that a namespace has its own scope so two different namespaces can have an object with the same name and there won’t be any conflict because they do not affect one another. You can just delete it in the next step.
Business View contains optimized query subjects for use by business users. It should validate automatically.
Now we need to create relationships and join the query items with the correct cardinality. You created your package, now you should get a prompt asking if you want to open the Publishing Package Wizard.
The branches in the unbalanced hierarchy descends to the different levels.
So you just created a project which is a set of components that defines metadata from one or multiple data sources. As long as you create a snowflake or star schema that has relationships of many-to-one from the inside out, clean things up, denormalize it, and etc, you should be okay.
Before we continue to the other data source query subjects, lets fix the properties for the query items in our Business View. When all are selected, right click on one of them, and choose Create Star Schema Grouping….
Creating a DMR model
This allows you to easily modify what business users see without modifying any of the query subjects, and when query subjects are modified in the Business View, changes take effect in the Presentation View as well.
Similarly to how model query subjects in Framework Manager provide an insulating layer from schematic changes to the data source, query subjects in Cognos Cube Designer remain static from a reporting perspective while their underlying implementation is updated to reflect the new database structure. Lets try this with Foodmart-reduced. Usually, you would only pick the tables necessary for the query or star schema, but the foodmart-reduced data source is small enough.
Property settings can be found at the bottom of Framework Manager after selecting a query item. There are other important properties that we can talk about on another recipe like Regular AggregateFormatPrecisionetc. Rename the newly imported query items and test modelliing see if it works. Customer is joined to region, lets merge them. The scope still remains the same. After logging in and selecting a language, the Metadata Wizard will start.
Now you can remove query items: In Cognos Cube Designer, you first create a query subject and then add query items from your data source to it. You can do a lot with expressions in Cognos. You then associate the security views moeelling users, groups and roles; these associations are stored in your Content Manager instances. Some of them are correct already.
In Framework Manager, you associate security filters with users, groups, and roles whose unique identifiers are stored within the model. In the other hand, model query subjects are made from one or more data source subject queries. This means less ,odelling The typical place to store packages is in Cognos Content Store.
DMR – Dimensionally Modeled Relational Model
Your final expression definition should be:. A Namespace is an object that uniquely identifies stored and organized objects that are found in your model. Now you have to define your objects.
Remember when we created the expression to concatenate first and last name to a full name query item? A regular dimension contains descriptive and business key dmd and organizes the information in a hierarchy from the highest level of granularity to the lowest.