Logical Data Modeling - Orphan (Entity, Instance)
Table of Contents
About
An orphan instance is an instance (entity) that does not have a corresponding existing parent record in a parent-child relationship.
An orphan is created if you insert an instance that does not have an existing parent instance.
Articles Related
Example
When you load an article into a fact table but this article code is not present in the article dimension. This record (instance) is an orphan record.
Management
When loading orphan instance, you can:
- Reject the instance
- Insert the instance in an other table
- Or set an other instance value to regroup the orphan instances (the -1 of -2 value)