To specify column projection properties, double click on the read operation and select the data object. The following table describes the columns projection properties that you configure for Kafka sources:

Property	Description
Column Name	The name field that contains data. This property is read-only.
Type	The native data type of the source. This property is read-only.
Enable Column Projection	Indicates that you use a schema to read the data that the source streams. By default, the data is streamed in binary format. To change the format in which the data is streamed, select this option and specify the schema format.
Schema Format	The format in which the source streams data. Select one of the following formats: XML JSON Flat Avro
Schema	Specify the XSD schema for the XML format, a sample file for JSON, or .avsc file for Avro format. For the Flat file format, configure the schema to associate a flat file to the Kafka source. When you provide a sample file, the Data Integration Service uses UTF-8 code page when reading the data.
Column Mapping	The mapping of source data to the data object. Click View to see the mapping.
Project Column as Complex Data Type	Project columns as complex data type for hierarchical data. For more information, see the Informatica Big Data Management User Guide .