Transactional databases might combi

Transactional databases might combine data from multiple source systems, they could contain
look-up tables and additional metadata that makes data discovery much easier, though often the data is limited in scope. For example, the transactional database might contain sales records for only the last three months. Large queries against the transactional database could be incredibly burdensome and could significantly impact the system’s performance bringing the entire business operation to a grinding halt.