An Introduction to Data Modeler

Data Modeler is a module that lets you create a data hierarchy in a structured format. This data is manipulated at the application level. It can be a business-related data or used for intermediate calculations. To manage data in a structured format, the user needs to create the following:

1. Entity
2. Enumeration (LOVs) – For LOV elements (Radio Button, Checkbox, LOV Slider, Dropdowns)
3. Data Model (Business Model)

In the Data Modeler module, the data model is created as an empty variable that establishes the connection between the front-end application and entity or enum. An entity contains the data in the following formats:

• A JSON based key/value pair
• A JSON object that contains a set of key/value pairs
• A JSON object that contains a set of JSON arrays; in the JSON object, each array contains a set of key/value pairs.

An enum object also contains the data in the form of a key/value pair in a parent key. In Data Modeler, the parent key is treated as a container that contains multiple key/value pairs.

To create an entity, enumeration, and data model, you can access the Data Modeler module as follows:

1. On the Vahana portal’s home page, see the top panel.

2. On the top panel, click the VDLC icon to display the context menu.
3. On the context menu, go to Design & Architecture>Data Modeler to display the Data Modeler page.

In the Data Modeler module, you can do the following:

• Create a data model
• Create an entity
• Define a JSON structure (with data values) in the entity
• Link the entity to the data model
• Link an application to the data model
• Create an enumeration
• Define a set of key/value pairs in the enumeration