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Projects
A project is a container for HCL Link artifacts.
Schemas
Use the schema designer to define, modify, and view schemas. A schema describes the syntax, structure, and semantics of your data.
Components
Required and optional data
Significance of required data

Projects
A project is a container for HCL Link artifacts.
- Flows
  This documentation describes how Flows can be run from REST API, listeners, or they can be scheduled.
- Maps
  Maps define input and output specifications and mapping rules for data transformation.
- Schemas
  Use the schema designer to define, modify, and view schemas. A schema describes the syntax, structure, and semantics of your data.
  - About schemas
    A schema defines the contents of at least one input that you intend to map or one output you intend to map.
  - Subtypes
  - Schema hierarchy
  - Defining data
  - Objects, types, and classes
  - Testing part of a schema
    You can test a schema by generating test data for an item or a group. The schema designer creates source and compiled maps that generate and validate the test data. The test-data-generation map automatically runs and produces a text file with the sample data. After that, the test-data-validation map automatically runs on the sample data file.
  - Type properties
  - Item restrictions
  - Components
  - Partitioning
  - Type inheritance
  - Error detection
  - Error recovery
  - Schema analyzer
  - Distinguishable objects
  - Return codes and error messages
- Connections and Actions
  This documentation describes connections and actions.
- Files
  Files are used in various places within HCL Link. HCL Link allows files to be uploaded to the HCL Linkserver.

Significance of required data

If you define an occurrence of a component as required, you are saying that, for the data containing the component to be valid, this component must exist. If it does not exist, the data is invalid.

For example, if you define Record as having the component Field (3:3), you are saying that there must be three Fields in the Record. If there are not three Fields, then either it is a Record in error or it is not a Record.

There are other factors, besides the existence of all required components that make data valid. The existence of required components is necessary, but not sufficient, for data to be valid.