The principal motivations for establishing the ICAMDATA conference series are to provide a focal point for intensive interactions between atomic and molecular data producers, compliers and users, and to provide a forum to discuss major issues, which are highlighted in this volume. Both theoretical and experimental approaches are reviewed and cover a broad spectrum of topics, including electron impact with atoms and molecules, atomic structure and transition probabilities, heavy particle collisions, quantum chemistry, and thermochemical data. Most papers focus not only on the means of production of data but also on providing some idea of the accuracy of the data produced. The third aspect of the conference examined closely the various databases around the world.