Which database anomaly describes the necessity to update the exact same data value in multiple independent rows, creating a risk of data inconsistency?
Explanation:
An Update Anomaly occurs when data is redundantly duplicated across rows, requiring changes to be made to every copy, risking inconsistencies if any row is missed.
Explanation:
The HAVING clause was added to SQL because the WHERE keyword cannot be applied to aggregate functions; it filters groups generated by the GROUP BY clause.
No comments yet. Be the first to start the discussion!