A LUW (Logical Unit of Work) is an attached sequence of database operations which must be executed either entirely or not at all. Thus, it constitutes a unit for the database system.
There are two types of LUW are:
DB LUW : A database LUW is a method used by the database to ensure data consistency. It is an attached sequence of database operations that ends with a database commit. If a database LUW has been successfully executed, the database will be in a consistent state. If a database LUW contains an error, then all of the database affected by this error. This makes the database as it was during the startup database.
SAP LUW : It is a logical unit consisting of dialog steps. The changes of these steps are written to the database in a single database LUW is called an SAP LUW. A SAP LUW can span several dialog steps. It can be executed using a series of different work processes.
