During the contract negotiation phase of the execution of a SQL-MapReduce function that uses an IMDC, the only IMDC operations that you can do are:
- Get the schema of an IMDC
Knowing the schema of the IMDC is useful when setting the output schema of the function. For instructions for getting the schema of an IMDC, see Getting IMDC Column Information.
- Associate the IMDC with input and output iterators