The Source card setting identifies the source of the input data. The data may be in a file, from a specific application, in a database, from a message queue, or from other possible sources. Defining the adapter source specifies where to go to get the data and specifics on which data to get.

The meaning of the various adapter source settings is specific to the adapter being used to get the input data.

The maximum size of a file that a map can process in integral mode is 2 GB. In burst mode, the maximum size is much larger, but can only be 2 GB in one burst.