...
Connect to Salesforce via OAuth. Your username and password are never shared directly with the app. You can save the refresh token as a connection string.
- Environment
Typically either Production for a standard org or Sandbox for an environment where you usually login with test.salesforce.com - Access Token
The session token returned by the OAuth process - Instance URL
The server URL that the access token is valid on - Refresh Token
Can be used to reestablish an expired session without needed to prompt for credentials again. Can be stored in a connection string.