What is insertion anomaly in dbms?

An insertion anomaly in a Database Management System (DBMS) occurs when certain data cannot be added to a database without the presence of other, unrelated data. This often arises in poorly designed relational databases, where dependencies between attributes lead to situations where new records cannot be created unless complete information is available. As a result, it can hinder data entry and lead to incomplete or inconsistent datasets. Proper normalization techniques can help mitigate insertion anomalies by organizing data more effectively.