A Search help is a tool to help you search for data records in the system
An efficient and user-friendly search assists users where the key of a record is unknown
Lock Objects
Simultaneous accessing of the same data record by two users in the SAP system is synchronized by a lock mechanism.
Locks are set and released by calling certain function modules. These function modules are generated automatically from the definition of so-called lock objects in the ABAP/4 Dictionary
Function modules : Enqueue_<obj name> - to lock the table dequeue_<obj name> - to release the lock
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