Building a data model
Creating a Data Model
Use of data models requires selection of an option. See Formalisms.
To create a data model in HOPEX Data Governance:
1. Click the navigation menu then Architecture > Hierarchy View.
In HOPEX Information Architecture, click the navigation menu then Data Architecture > Logical Data Assets.2. In the edit area, display the list of Data Models.
3. Click the New button.
4. In the dialog box that appears, enter the name of the data model, and an owner if necessary.
5. Click OK.
The data model created appears in the list of data models.
Creating a Data Diagram
A data diagram is a graphical representation of a model or of part of a model.
A data diagram is represented by:
• Entities, which represent the basic concepts (customer, account, product, etc.).
• Associations, which define the relationships between the different entities.
• Attributes, which describe the characteristics of entities and, in certain cases, of associations.
The attribute or set of attributes that enables unique identification of an entity is called an identifier.
The data diagram also contains multiplicity definitions.
To create a data diagram:
Right-click the data model and select New > Data Diagram.The data diagram opens.
Datatypes
A type is used to group characteristics shared by several attributes.
When you create a data model, the "Datatype Reference" datatype package is automatically connected with it by default. The list of datatypes it contains is available on each attribute of entities of the model. You can however assign to it another datatype package.
The reference datatype package of a data model is displayed in the properties dialog box of the model, in the Characteristics tab.
See also Datatype Packages.