Table of Contents

Search

  1. Preface
  2. Introduction to Cloud Integration Hub
  3. Hub administration
  4. Project and Asset Management
  5. Applications
  6. Topics
  7. Data Integration tasks
  8. Publications
  9. Subscriptions
  10. Tracking and monitoring
  11. Cloud Integration Hub REST APIs
  12. Glossary

Cloud Integration Hub

Cloud Integration Hub

Topic structure updates

Topic structure updates

When you edit the structure of a topic with associated publications or subscriptions, it might affect the associated publications and subscriptions. Topic structure changes might also impact the data in the publication repository and sometimes cause data loss.
Based on the nature of the update, you might have to edit the associated publications and subscriptions to align with the updated topic structure. The following table describes the effects of topic structure updates on data in the publication repository and the resulting optional or required changes to the associated publications and subscriptions.
Topic Structure Update
Effect on Data in Publication Repository 1
Optional/Required Changes to Associated Publications and Subscriptions
Add table
Table added
Optional: To publish and to consume the additional table, edit the mapping to include the additional table.
If you do not update the mapping, data in the table will not be published to the publication repository and subscribers will not receive it.
Delete table
Table deleted, including data that was published to the table
Remove references to the table from the mapping of publications and from the mapping and the filter of subscriptions.
Add column
Column added
Optional: To publish and to consume the additional column, edit the mapping to include the additional column.
If you do not update the mapping, data in the column will not be published to the publication repository and subscribers will not receive it.
Delete column
Column deleted, including data that was published to the column
Remove references to the column from the mapping of publications and from the mapping and the filter of subscriptions.
Rename column
Column deleted, including data that was published to the column, and another column created with new name
Remove references to the changed column from the mapping of publications and from the mapping and the filter of subscriptions.
Optional: To publish or to consume the column that is created with a new name, edit the mapping to include the new column.
If you do not update the mapping, data in the new column will not be published to the publication repository and subscribers will not receive it.
Change column data type
Column deleted, including data that was published to the column, and another column created with new data type
Remove references to the changed column from the mapping of publications and from the mapping and the filter of subscriptions.
Optional: To publish or to consume the column that is created with the new data type, edit the mapping to include the new column.
If you do not update the mapping, data in the new column will not be published to the publication repository and subscribers will not receive it.
Increase column precision, scale unchanged
Column updated
Open the publication or the subscription page for all associated publications and subscriptions. You do not need to edit any of the publication or subscription settings.
Increase column precision, increase scale by a lower value than the precision increase or by the same value as the precision increase
Column updated
Open the publication or the subscription page for all associated publications and subscriptions. You do not need to edit any of the publication or subscription settings.
Any other precision or scale updates
Column deleted, including data that was published to the column, and another column created with updated precision or scale
Remove references to the changed column from the mapping of publications and from the mapping and the filter of subscriptions.
Optional: To publish or to consume the column that is created with the new precision or the new scale, edit the mapping to include the new column.
If you do not update the mapping, data in the new column will not be published to the publication repository and subscribers will not receive it.