our first paper of this series , we have created a large and well-defined data base that combines extensive new measurements and a literature search of 3876 SNe and their 3679 host galaxies located within the sky area covered by the SDSS Data Release 8 (DR8). This data base is much larger than previous ones, and provides a homogeneous set of global parameters of SN hosts, including morphological classifications and measures of activity classes of nuclei. Moreover, in Paper , we analysed and discussed many selection effects and biases, which usually affect the statistical studies of SNe. In the second article of the series @2014MNRAS.444.2428H [hereafter Paper II], we presented an analysis of the relative frequencies of the different SN types in nearby spiral galaxies with various morphological types and with or without bars. We used a subsample of spiral host galaxies of 692 SNe in different stages of galaxy–galaxy interaction and activity classes of nucleus. We proposed that the underlying mechanisms shaping the number ratios of SNe types could be interpreted within the framework of interaction-induced star formation, in addition to the known relations between morphologies and stellar populations. For more details, the reader is referred to Papers  and 