PDS4 Local Data Dictionaries (LDDs)

The NASA Planetary Data System PDS4 Data Dictionaries Repo is used for managing PDS4 Local Data Dictionaries (LDDs) for the PDS4 Information Model. LDDs are a critical component of the PDS4 Data Standard.

This website is intended to provide a how-to for to developing, managing, and using PDS Local Data Dictionaries.

Getting Started:

• Getting Started
  • Background
  • Additional PDS4 Documentation
• Getting to Know Your LDD Repo
  • Overview
  • LDD Generation and Validation
    • Generating schemas and schematrons
    • LDD Validation
  • Repo Directory Structure
    • README.md
    • pds4_versions.txt
    • build/
    • docs/
    • logs/
    • src/
    • test/
  • Trying It Out
  • Handling LDD dependencies

Development

• LDD Creation Process
  • Proposing a New Discipline LDD
    • 1. Is this LDD needed?
    • 2. Who is the LDD Stewardship Team?
    • 3. Who is the dLDD Modeling Team?
  • Proposing a New Mission LDD
  • Submit Request For New LDD Creation
  • Initializing New LDD
    • Create LDD Stewardship Team
    • Creating New LDD Repository
  • Retrofit Existing LDD Repository (Admin / Stewards Only)
• LDD Update Process
  • 1. Change Request Proposed
  • 2. LDD Steward Initial Approval
  • 3. Update IngestLDD
  • 4. Push Updates To Github
  • 5. LDD Change Control Board Approval
  • 6. Approve and Merge Changes
  • 7. (optional) Contact EN for Point Build
• LDD How-To Guides
  • Trigger LDD Build
  • Generate a Discipline LDD
  • Generate a Mission LDD
  • Generate a LDD with a specific PDS4 Version
  • Specify Enumerated Values for Attributes within Inherited Classes
  • Schematron (DD_Rule) Help
    • Specify Enumerated Values for Inherited Attributes
  • Using Schematron value-of functionality
  • Mission LDD Namespace Formation Guidelines
  • Basics For Creating an Ingest LDD
  • Reviewing a Pull Request
  • Merging an Approved Pull Request
  • Generate Human Readable Versions of the LDD
  • Use Multiple Files to Define a Single Namespace
  • Merge A New Release Branch Into My Current Working Branch
  • How to Change PDS4 Build Versions
  • TBD
• LDD Build Process
  • Build LDD Using Github
  • Build LDD Using LDDTool
• LDD Release Process
  • Release
    • Nominal Development and Release
    • Off-Nominal Release
  • Preparing a Release
    • Check Github for Tagged Released
    • Tag a Release In Github
    • Submit Release Request
  • Reviewing a Staged Release
• Mission LDD Processes
  • Proposing a New Mission LDD
  • Release a Mission LDD

Teams

• LDD Change Control Board
  • Membership
  • Communication
  • Voting and Approvals of Change Requests
• PDS DD Stewards
  • PDS DD Steward Admins

Support

• Contact Us
  • Need Help with an LDD?
  • Need Additonal Help?
• Contribute
• Request a New LDD
• Request a New LDD Class or Attribute
• Report a Bug
• User Forum
• Github Help
  • Git and Github Training
    • Getting Started (~3 hrs)
    • Using Github Desktop (TBD hrs)
  • Github Best Practices
  • Github Tutorials
  • Github Notifications
  • Github Tips and Tricks
• Tutorials
  • LDD Update and Build Tutorial
    • 0. Request Test Token from EN
    • 1. Clone the ldd-template repository
    • 2. Create a Branch for Your Proposed Changes
    • 3. Make an Update and Push to Branch
    • 4. Continuous Integration with Github Actions
    • 5. Refresh Your Local Branch
    • 6. Create a Pull Request (PR)
  • LDD Update and Break Build Tutorial
    • 1. Clone the ldd-template repository
    • 2. Create a Branch for Your Proposed Changes
    • 3. Make an Update and Push to Branch
    • 4. Continuous Integration with Github Actions