The Sql Engine connection string parameter determines how dotConnect for MongoDB interprets the command text.

	Sql Engine=true (default)	Sql Engine=false (native mode)
Command text	A SQL statement in the SQLite dialect.	A MongoDB database command in Extended JSON.
Collection	A table. For more information, see Collections as Tables.	The target of the command. The insert command creates the collection if it doesn't exist.
Supported	SELECT, INSERT, INSERT ... SELECT, UPDATE, and DELETE with any WHERE clause, SQLite functions, inner and left joins, CREATE TABLE, DROP TABLE, CREATE INDEX, and DROP INDEX.	find, distinct, count, aggregate, getMore, insert, update, delete, create, drop, createIndexes, dropIndexes, ping, buildInfo, hello, and dropDatabase.
Not supported	ALTER TABLE, views, triggers, and RETURNING.	Any other command, for example, listCollections or collMod. Such a command fails with the "The '<command>' command is not supported" error.
Required for	Entity Framework Core, Server Explorer, DataSet tools, and MongoDBScript.

The topics in the Working with Data section describe SQL mode unless otherwise specified.