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Metadata Model Overview

ONE uses a metadata model to create the user interface. To achieve this, the metadata model defines entities, their properties, traits, and relationships. An entity defines a type of a data asset or a section in ONE and visualized as a node on the model graph.

This makes ONE highly customizable and flexible based on the specified metadata model.

The metadata model in ONE consists of metadata and meta-metadata.

References to entities, nodes, or objects in documentation apply to what is defined or included in this metadata model, for example, the entity source.

What is referred to as instances are the instances of data (that is, data assets). For example, in case of the source entity, instances could include AWS S3, a local filesystem, MDM, or others.

To view the metadata model, go to Organization > Metadata model.

Metadata model

The Metadata Model screen provides the following options:

  • (1) Metadata Model: Contains a list of entities that make up the model.

  • (2) Model Graph: Select this tab to view a detailed schema of all entity connections within the model. For more information, see Metadata Model Graph.

  • (3) Search field: Search for specific entities in the metadata model list.

  • (4) Create entity: Select this option to start creating a new entity. For a detailed step-by-step example of how to create an entity, see ONE Metadata Model Tutorial.

  • (5) Individual entities: Select individual entities to view the details of their configuration and make needed changes.

How to configure the metadata model

There are two options to configure the metadata model:

  • Making changes directly in Organization > Metadata Model. This includes the following:

  • Adding changes in the form of JSON files in Organization > System Changes. For more information, see Upgrade Center.

Editing and deleting the basic configuration of all default entities is disabled. However, you can make changes to the metadata model by adding properties and traits to default entities and creating custom entities.

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