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Early Arriving Fact Also known as Late Arriving Dimensions.
An early arriving fact takes place when the activity measurement arrives at the data warehouse without its full context. In other words, the statuses of the dimensions attached to the activity measurement are ambiguous or unknown for some period of time.
An early arriving fact is also known as a late arriving dimension because the dimensional member will arrive after the activity measurement
In Extract-Transform-Load (ETL) terminology, an early arriving fact is when the ETL process performs a look up of a surrogate key in a dimension table using the natural key of a fact table, and no value is returned because the dimension record doesn’t exist yet.
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