The DIPOS database system is designed to help plan how to expand electric power systems using computers. It focuses on creating specialized databases for specific needs rather than general ones to provide better solutions. The system uses a mix of relational and network database models to give users familiar data structures while allowing for useful data patterns. This makes it easier to work with the data and find better solutions when planning how to expand power networks. The researchers show that this approach can help in efficiently organizing and using data for electric power system planning.