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Column Projections Properties

The following table describes the columns projection properties that you configure for MapR Stream sources:

Property	Description
Column Name	The name field that contains data. This property is read-only.
Type	The native data type of the resource. 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. You can select one of the following formats: XML JSON Avro
Add Schema	Specify the XSD schema for the XML format, a sample JSON for the JSON format, or .avsc file for the Avro format.
Use Intelligent Structure Model	Displays the intelligent structure model associated with the complex file. You can select a different model. If you disable the column projection, the intelligent structure model associated with the data object is removed. If you want to associate an intelligent structure model again with the data object, enable the column projection and click Select Model. For more information on intelligent structure models, see the Data Engineering Integration User Guide .
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 Data Engineering Integration User Guide .