Modeling with Hub Central

Overview

The entity model is a core component of data integration in MarkLogic Data Hub. It defines the standard structures (entity types) that would be populated with values from your raw data, so that your data components can be accessed uniformly regardless of the format and structure of the source.

The entity type is comprised of entity properties, which can be of any of the following types:

• A basic data type, including integer, string, dateTime, boolean, and other less common string, number, and date types (under More string types, More number types, and More date types).
• A structured type, which is comprised of its own properties, which can also be of other structured types. Use a structured type if the values of its properties will change for every entity instance. For example, the property FullName of the entity Employee could be a structured type, because each employee would have a different full name.

  The depth of nested structured types is not limited.

• A relationship type, which links to an entity of the selected type. Use a relationship type if the properties of the target entity must be the same for all entities that point to it. For example, the entity Order could point to the entity Product as a relationship type, because the SKU and product description will be the same for all customer orders.

Learn more: Entities

Security

You must be assigned the following security roles:

• To view, create, edit, or delete an entity model: Hub Central Modeler

Or any role that inherits the required role. See Users and Roles.

Modeling Process

To integrate your data,

1. To create an entity type, see Create an Entity Type.
2. Use the entity type to curate your data.

Managing Entity Types

To edit an entity type, see Edit Entity Type.

To manage the properties of an entity type, see Manage Entity Properties.

To publish changes,

• Go to the Model area of Hub Central.
  Learn how.

  1. Go to your Hub Central endpoint.
     Note: Disregard this step if you are working from an on-prem environment. See Step 1b.

     Learn more:

     • Endpoints and Port Numbers - AWS
  2. In the icon bar, click the Model icon ().
     
     
     
     
• To publish all your changes to all entity types, click Publish.

To delete an entity type,

1. Go to the Model area of Hub Central.
   Learn how.

   1. Go to your Hub Central endpoint.
      Note: Disregard this step if you are working from an on-prem environment. See Step 1b.

      Learn more:

      • Endpoints and Port Numbers - AWS
   2. In the icon bar, click the Model icon ().
      
      
      
      
2. In the list, click the Delete icon () for the entity type to delete.