Several scientific communities have highlighted the lack of precision and the inconsistencies present in the reference atomic database EADL. The data were calculated using a fairly simple Dirac-Hartree-Slater approach and then subsequently corrected empirically. However, to date it remains the only database that is sufficiently complete to be usable by simulation codes. In recent years, a collaboration was initiated and reinforced during two successive European projects between the FCT-UNL (Lisbon, Portugal), the IPCMS (Strasbourg, France) and the LNHB (CEA Saclay, France). A new relativistic atomic code, based on the density functional theory, has been developed and validated by studying different electron capture transition probabilities. The aim of the present subject is to develop a new reference atomic database based on this atomic code. The required theoretical equations will have to be established. Several elements will be calculated and the predictions will be compared to available results in the literature. The influence of this precise atomic modeling on the atomic exchange effect that occurs in beta transitions will also be studied. At least one publication and one participation to an international conference are expected.