Final answer:
Data integrity issues primarily occur when there is data duplication in a database, leading to possible inconsistencies and inaccuracies in the stored information.
Step-by-step explanation:
A data integrity problem will occur only if data are duplicated in a database. Data integrity refers to the accuracy and consistency of data stored in a database or a data warehouse. Data duplication, also known as data redundancy, can cause inconsistencies, as the same piece of data may be updated in one location but not in another, leading to discrepancies and issues with data accuracy. This problem is not necessarily associated with having multiple administrators, the complexity of the database, or the complexity of relationships between entities, although these factors can contribute to the risk of integrity problems if not properly managed.