I need to connect to an Ingres supplied demodb through OpenAPI, both Ingres and C application running on windows. What i have done:

1. Created a "node" in the Ingres Network Utility named "usernode".
2. created user accounts in the Ingres installation (named "user" password "user") and in the Windows user management (the same creds.)
3. Granted necessary privileges to the user in the database.
4. In C code i have called IIapi_connect() function with an IIAPI_CONNPARM structure. Used members: co_target = "usernode::demodb", co_username = "user", co_password = "user"

But IIapi_connect() call returns an error:

"User provided a vnode as part of the database name (vnode::dbname), but connection information for that vnode is missing. Enter connection information for the vnode using NETUTIL."

Anybody knows something that is a weird concept "node"?

What are the minimum steps (in the database administration and the function parameters passing) necessary for the successful connect?