Snow Owl Authoring Platform User Guide
9.5
9.5
  • Table of Content
  • 🦉Introduction
    • Getting Started
      • Features
      • How can I run it?
      • Login
        • Repositories
        • SNOMED CT Code Systems Configuration
        • Included SNOMED CT Version
    • User Interface
      • Editors
        • Introduction
        • Vertical Display
        • Horizontal Display
      • Views
        • Bookmarks View
          • Bookmarking
          • Delete
        • Remote Jobs View
      • Perspectives
      • Notification Center
    • Preferences
      • SNOMED CT Settings
      • Editor Tables
      • Reasoners
      • Keyboard Preferences
      • Avatars
  • 🔎Browsing and Searching
    • SNOMED CT View
      • Hierarchy
      • Sub-hierarchy
      • Link with Editor
      • Context Menu
      • Authoring Mode
      • Icons
      • Extension Modules
      • Parents View
    • Searching
      • Filter Search
        • Features
      • Quick Search
        • Features
      • Advanced Search
        • Search Dialog
          • SNOMED CT Concept Search
          • SNOMED CT Description Search
          • Searching for Reference Sets
        • Search View
          • Sorting Results
          • Toolbar
          • Preferences
    • Semantic Queries
      • ECL Operators
      • ECL Editor
      • Project Explorer View
        • Create
        • Expression File
          • Content Assist
          • Concept to Expression
          • Executing a Query
          • Validation
        • Template Preferences
    • Scripting
      • Create
      • Executing Scripts
    • Copying Content
  • 📝Editing and Authoring
    • Authoring Mode Selection
      • OWL Axiom Support
    • SNOMED CT Concept Editor
      • Preferences
      • Navigation
      • Features
      • Overview Page
        • Descriptions Section
        • Properties Section
        • SNOMED CT Properties Section
      • Descriptions Page
      • Relationship Pages
        • Source relationships Page
        • Destination relationships Page
      • Memberships Page
      • SNOMED CT Mappings Page
      • References Page
      • Visualization Page
    • SNOMED CT Editing
      • Concept Creation
        • Creating a Child Concept
        • Creating Sibling Concept
      • Concept Editing
        • Adding a Synonym
        • Changing the Preferred Term
        • Adding a Relationship
        • Editing Relationships
        • Adding Descriptions
        • Concept Reactivation
      • Removing Components
        • Concept Deleting
        • Concept Inactivation
        • Description Inactivation
    • Evaluating Changes
      • Concept History
      • Validation
      • Classification
  • 🧠Description Logic
    • Running the Classification
    • Classification Results
      • Relationship Changes Page
      • Equivalent Concepts Changes Page
      • Concept Changes Page
    • Reasoners
      • ELK
  • 🧱Concept model
    • Machine Readable Concept Model
      • MRCM domain members
      • MRCM attribute domain members
      • MRCM attribute range members
    • Editing MRCM
      • Module scope
      • Domain
      • Attribute
      • Range
  • 📄Reference Sets
    • Reference Set Types
      • Content type Reference Sets
        • Simple type Reference Sets
        • Query type Reference Sets
        • Attribute Value type Reference Sets
        • OWL Expression type Reference Sets
      • Language type Reference Sets
      • Map type Reference Sets
        • Simple Map type Reference Sets
        • Complex Map Type Reference Sets
        • Complex Map Extended with Map Block type Reference Sets
        • Extended Map type Reference Sets
      • Metadata type Reference Sets
        • MRCM Domain Reference Sets
        • MRCM Attribute Domain Reference Sets
        • MRCM Attribute Range Reference Sets
        • MRCM Module Scope Reference Set
        • Module Dependency Reference Set
        • Description Format type Reference Set
    • Reference Set View
      • Link Reference Set Editor with SNOMED CT View
      • Context Menu
      • Tooltips
    • Reference Set Editor
      • Toolbar
      • Context Menu
      • Preferences
    • Authoring
      • Creating Reference Sets
      • Removing/Inactivating Reference Sets
      • Adding Reference Set Members
      • Removing Reference Set Members
    • Combining Reference Sets
    • Compare Reference Sets
  • 🏥Local Code Systems
    • Import
      • Custom Spreadsheet
    • Searching
    • Authoring
      • Creating Local Code Systems
        • Additional Property Definitions
        • Property Validation
      • Deleting Local Code Systems
      • Adding Local Codes
      • Reparenting Local Codes
      • Inactivating Local Codes
      • Deleting Local Codes
    • Validation
    • Export
  • 📅Versioning
    • Introduction
    • Creating a New Version
    • Switching Between Versions
    • Version Compare
      • Browse Changes
      • Export Results
  • 🔁Content Management
    • Code Systems
    • Code Systems View
    • SNOMED CT Importing
    • SNOMED CT Publishing
      • SNOMED CT Reference Set Export
    • SNOMED CT Extensions
    • SNOMED CT Upgrade
      • Perform Upgrade
      • Complete Upgrade Process
  • 👩‍⚕️👨‍⚕️ Collaborative authoring
    • Task Life Cycle
    • The Task List View
    • Task Editor
      • Overview Page
      • Task Changes Page
      • Review Changes Page
    • Authoring
      • Creating a Task
      • Assigning Tasks
      • Activating Tasks
      • Synchronizing Tasks
      • Module-based Editing
      • Promoting and Closing Tasks
      • Commenting on Tasks
      • Review Tasks
        • Approve Changes
        • Reject Changes
        • Request Changes
    • Task Query
  • ✅Validation
    • Run Validation
    • Validation Issues View
      • Filters
      • Validation Result & Export
    • Whitelisting
      • Import
      • Export
  • 📓SNOMED CT Templates
    • SNOMED CT Templates
    • Import
    • Templates View
    • Authoring
      • Creating Templates
      • Deleting Templates
    • Concept Creation by Templates
      • Single Concept Creation
      • Bulk Concept Creation
    • Export
  • 🩺UMLS Code Systems
    • Import
    • Manage Code Systems
    • Searching and Browsing
  • 🛑Error Handling
    • Troubleshooting
      • Error Log View
    • Error Messages
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  1. Versioning

Introduction

The concept of versioning has been well known in the software industry for decades. Modern source control systems handle concurrent development, branching, merging, conflict resolution, and the versioning (tagging) of resources. Depending on the particular terminology, there has been very little specified regarding versioning, and even less has been implemented in the tools that support terminology authoring.

Snow Owl aims to fill this gap for its managed content by providing support for revision control, versioning, branching, and merging.

A version is created when the state of a particular terminology needs to be captured. From a business sense, it is performed when the terminology is ready to be published to customers. Versioning always applies to the entire terminology and can be performed at any time on the current state of the terminology. For example, the SNOMED CT July 2013 release is a version that marks the state of SNOMED CT at this particular point in time. Different versions are distinguished by tags, hence the process of creating a version is often referred to as tagging. There are no versions of SNOMED CT Reference Sets, and SNOMED CT Map type Reference Sets since they are considered to be part of SNOMED CT. When a new version of SNOMED CT is created, modifications made to Reference Sets and Map type Reference Sets are contained.

In addition to marking the state of the terminology, versioning is also useful if a patch needs to be provided between release cycles. A patch is a retrospective fix of an already published version. To create a patch, clinicians need to be able to view and make changes to an older (already published) version, without interfering with the ongoing development of the upcoming (unpublished) release. Therefore any work performed on a particular version is isolated from work performed on the rest of the versions. For this reason, changes made for the patch are not automatically included in the content of the later version but need to be authored separately.

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