The 29 revised full papers presented in this book were carefully reviewed and selected from 84 submissions.  6th International Workshop on Big Data Quality Management (BDQM 2021)5th International Workshop on Graph Data Management and Analysis (GDMA 2021) First International Workshop on Machine Learning and Deep Learning for Data Security Applications (MLDLDSA 2021)6th International Workshop on Mobile Data Management, Mining, and Computing on Social Network (MobiSocial 2021)2021 International Workshop on Mobile Ubiquitous Systems and Technologies (MUST 2021) weiterlesen