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Reference Guide
This guide describes conceptual information about data design environment components when you want to use the data fabrication feature in HCL OneTest™ Server.
Schema design
A schema is a graphical data dictionary that contains metadata definitions of the structure of a document to generate test data. Schema provides visual cues for understanding the structure and complete definition of an object.
Distinguishable objects
Initiator-distinguishable types
Determining if a component is initiator-distinguishable from its following set

Reference Guide
This guide describes conceptual information about data design environment components when you want to use the data fabrication feature in HCL OneTest™ Server.
- Files
  You add a file to a project to use it as input in the project. You can upload a file from your local file system to a project from the Files tab to generate test data. Alternatively, you can upload it when you define an action.
- Connections
  A connection defines the properties that are required to connect to an external resource. An action uses a connection to provide source data to a project or write data from a source to a target. Multiple actions can use the same connection. You can define both connections and actions at the project level.
- Schema design
  A schema is a graphical data dictionary that contains metadata definitions of the structure of a document to generate test data. Schema provides visual cues for understanding the structure and complete definition of an object.
  - Introduction to schema design
    Use the Schemas tab to define, modify, and view schemas. A schema describes the syntax, structure, and semantics of your data.
  - Type properties
    The properties of a type define the characteristics of the data objects of that type.
  - Item restrictions
    Item restrictions are an optional feature you can use to specify valid or invalid data objects for an item type. Item restrictions are grouped into three categories: Value, Character, and Range.
  - Components
  - Partitioning
  - Type inheritance
  - Schema analyzer
  - Distinguishable objects
  - Functions and expressions

Determining if a component is initiator-distinguishable from its following set

A component is initiator-distinguishable from its following set if:

The component is not a member of the identifier set and
The type of the component has an initiator and
The following set is empty or
The type of the component is initiator-distinguishable from each type in its following set.

Schemas are analyzed to determine if components are initiator-distinguishable. Each implicit sequence group, choice group, and unordered group is analyzed to determine if their components are initiator-distinguishable. A component is marked as initiator-distinguishable when that component is initiator-distinguishable from its following set. The basis for this determination is found in "Determining If Two Types are Initiator-Distinguishable" .