A workflow describes a sequence of tasks that Informatica applications can perform. A task might contain instructions to run a mapping, to send an email, or to distribute exception records to Analyst tool users. A task that distributes exception records to Analyst tool users is called a Human task. The tasks that you work on in the Analyst tool are instances of a Human task. Each task instance identifies a set of records in an exception database table.

A workflow that contains a Human task must also contain a Mapping task. A Mapping task runs a data process called a mapping. The mapping verifies the quality of the records in the source data and writes the records to different tables based on a set of data quality indicators. The Human task reads the table that contains the exception records and assigns the records to Analyst tool users for analysis and repair.

When the exception record table contains many records, a task instance identifies a subset of the records. The workflow distributes the task instances to the Analyst tool users that the workflow developer identifies. Analyst tool users can work on the task instances concurrently.