Transactional Workflows Must address following issues to computerize a workflow. Specification of workflows-detailing the tasks that must be carried out and defining the execution requirements. Execution of workflows-execute transactions specified in the workflow while also providing traditional database safeguards related to the correctness of computations,data integrity,and durability. E.g.:Loan application should not get lost even if system fails. Extend transaction concepts to the context of workflows. State of a workflow-consists of the collection of states of its constituent tasks,and the states (i.e.values)of all variables in the execution plan. Database System Concepts,5th Ed. 25.13 ©Silberschat乜，Korth and SudarshanDatabase System Concepts, 5 25.13 ©Silberschatz, Korth and Sudarshan th Ed. Transactional Workflows Must address following issues to computerize a workflow. Specification of workflows - detailing the tasks that must be carried out and defining the execution requirements. Execution of workflows - execute transactions specified in the workflow while also providing traditional database safeguards related to the correctness of computations, data integrity, and durability. E.g.: Loan application should not get lost even if system fails. Extend transaction concepts to the context of workflows. State of a workflow - consists of the collection of states of its constituent tasks, and the states (i.e. values) of all variables in the execution plan