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In some fields, transactions are a big deal. Microsoft created Microsoft Transaction Server (MTS) and then COM+ to make developing transaction-based applications easier than they used to be. EJBs and their servers were also designed with transactions in mind. So what are they? Let’s start with a definition:
Definition
A transaction is a unit of work in which everything is done or none of it is. It isn’t possible for only part of a transaction to complete.