Thousands of installations using databases implemented in the network model are still operational today. Network databases have been traditionally developed by many individuals and have evolved over a long period of time. There is a need to: -develop approaches for capuring them in an abstract form to facilitate further development (reverse engineering), -convert directly existing network databases into relational databases (migration). We compare these two approaches to convert existing network databases into relational ones. The comparison is based on the definition of three schema mappings using three different meta-models: -a network meta-model, -a relational meta-model, -an EER meta-model. The three schema mappings are defined using production rules operating on these meta-models. The comparison leads to the conclusion that reverse engineering may be less efficient and difficult to operate automatically. How AKOKA, J. and WATTIAU, I. (2000). Migration vs. Reverse Engineering of Network Databases.
AKOKA, J. and WATTIAU, I. (2000). Migration vs. Reverse Engineering of Network Databases.