IEP Operator Inputs and Outputs

You can categorize the IEP operators by their input and outputs.

• Stream to Relation. Operators that take a stream as input, and produce a relation as output with the same schema as the stream.

• Relation to Stream. Operators that take a relation as input, and produce a stream as output with the same schema as the relation.

• Relation to Relation. Operators that take one or more relations as input, and produce a relation as output.

• Stream to Stream. Operators that take a stream as input, and produce a stream as output. The input stream and the output stream can have different schemas.

• Relation to Table. Operators that take a relation as input, and produce a table as output.

For specific information about each IEP operator, see the following topics:

• Aggregator Operators

• Correlation and Filter Operators

• Input Operators

• Output Operators

• Relation Converter Operators

• Relation Operators

• Sequence Operators

• Stream Converter Operators