When you create a transformation from a physical data object, information about the data object appears on the

Data Object

tab of the transformation properties. You can click the data object name to view the physical data object definition from the Model repository.

You can change the data object for the transformation by browsing for a different physical data object in the Model repository. When you change the data object, the transformation uses the run time properties and the advanced properties of the data object that you select.

You can update the structure of the data object at run time based on changes in the data source. The data source is the physical file or the database table that the data object represents. When you enable the Data Integration Service to get data columns from the data source, the Data Integration Service examines the structure of the data source. The Data Integration Service updates the data object ports in the transformation instance based on the data source. The Data Integration Service does not change the physical data object definition in the Model repository.

The following image shows the

Data Object

tab:

The

Data Object

tab has the following fields:

Specify by

Choose

Value

to enter a specific data object name. Choose

Parameter

to parameterize the data object.

Data object

The name of the data object in the Model repository. You can click the

Data Object

link to open the data object definition from the repository. You can also Browse for a different data object in the Model repository.

Description

The description of the data object in the repository. Read-only.

Data object type

Describes the type of data object, such as a flat file data object, a relational table object, or a customized data object.

At run time, get data object columns from the data source

The Data Integration Service fetches metadata and data definition changes from the data file or the table that the data object refers to and updates the structure of the data object for the transformation instance at run time.

To preview how the Data Integration Service fetches metadata and data definition changes at run time, view the mapping with resolved parameters.