Document field definitions

Name	Mongo document path	Use field name	NULL values	JSON	Match field for update	Modifier operation	Modifier policy
first	top1	Y		N	N	N/A	lnsert&Update
last	array[O]	Y		N	N	N/A	lnsert&Update
address	array[O]	Y		N	N	N/A	lnsert&Update
age	array[O]	Y		N	N	N/A	lnsert&Update