Glossary TOMA Abbreviation of Nexeed Tool Management IAS short for Nexeed Industrial Application System MACMA Nexeed IAS Multitenant Access Control MDM Master Data Management MES short for Manufacturing Execution Systems MMPD Old alias for Master Data Management (MDM) RabbitMQ Open-source message broker RDBMS short for Relational Database Management System Tenant Tenants represent the customers in a multi-tenancy architecture in which a single instance of a software application serves multiple customers.