B Business economics > B.07 Marketing > B.07.01 Marketing management > Customer data

B Business economics > B.07 Marketing > B.07.06 Market research > Customer data

N Related subject areas > N.10 Natural sciences and technology > N.10.05 Information technology and computer science > Data > Customer data

... > N Related subject areas > N.09 Mathematical and statistical methods > N.09.02 Statistics > N.09.02.02 Statistical data collection > Data > Customer data