def tags(self):
        '''Display tag information for all samples in database'''
        tags = self.workbench.get_all_tags()
        if not tags:
            return
        tag_df = pd.DataFrame(tags)
        tag_df = self.vectorize(tag_df, 'tags')
        print '\n%sSamples in Database%s' % (color.LightPurple, color.Normal)
        self.top_corr(tag_df)
Display tag information for all samples in database