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The Schema Explorer

The Schema Explorer is an editor-time tool within the FactsDB Debugger designed to give you a clear and interactive view of your project's Fact Schema definitions. It is the central place to understand schema inheritance, discover all facts available within a schema, and trace any fact back to its source UDataTable asset.

Unlike the Hierarchy view, which shows live data from a PIE session, the Schema Explorer works with the static definitions configured in your project's FactsDB Runtime Settings.

Interface Overview​

The Schema Explorer is composed of two main panels: the Schema Hierarchy on the left, and the Fact Definitions panel on the right.

The Schema Explorer interface

Schema Hierarchy​

This tree view visualizes the inheritance relationships between all defined FFactSchemaTag entries in your project.

  • If a schema B is nested under schema A, it means that B inherits all the fact definitions from A.
  • Selecting a schema in this tree will populate the Fact Definitions panel on the right with all the facts that belong to it (both its own and inherited ones).
  • The Refresh button at the top will reload all schema data directly from your project's configuration assets.

The Schema Hierarchy tree showing parent-child relationships

Fact Definitions Panel​

This panel displays a detailed list of every fact contained within the schema you selected on the left. It has two modes, controlled by the switcher at the top:

  • All Facts (Default): Shows a complete list of every fact available in the selected schema. This includes facts defined directly in this schema as well as all facts inherited from its parent schemas.
  • Declared Only: Filters the list to show only the facts that are explicitly defined or overridden in the DataTables associated with the currently selected schema. This is extremely useful for understanding what a specific schema adds or changes relative to its parent.

The list provides several columns of information:

  • Origin: An icon indicating where the fact comes from.
    • icon-plus | Declared: The fact is defined in this schema.
    • icon-link | Inherited: The fact is inherited from a parent. The tooltip will tell you exactly which parent schema it comes from.
  • Fact Tag: The unique FFactTag identifying the fact.
  • Type: The data type of the fact (e.g., FFactInteger, FVector).
  • Default Value: The default value as configured in the source UDataTable.
  • Description: The descriptive tooltip for the fact.
  • Go To: A button that directly opens the source UDataTable and highlights the exact row where the fact is defined.

The Fact Definitions panel showing a mix of declared and inherited facts

By using the Schema Explorer, you can easily answer critical questions like:

  • "Which schema provides the Facts.Character.Stats.Stamina fact?"
  • "What is the default health for all enemies that inherit from Schema.Enemy.Base?"
  • "Where exactly in the project is the Facts.Item.CanBeSold flag defined?"

Next Up: Diagnostic Panels