Which of the following statements correctly explain the roles of data marts and data warehouses in a decision support system (DSS)?
1) Data marts are subsets of data warehouses that focus on specific business functions or departments.
2) Data warehouses are centralized repositories of integrated data from various sources.
3) Data marts are used for storing historical data, while data warehouses are used for real-time data analysis.
4) Data warehouses are designed for operational reporting, while data marts are designed for strategic analysis.