# Backend

The type of document tracking component backend. Use one of the following values:

CouchDB | A CouchDB database. TargetHost is the host name of the machine, and TargetPort is the port for the CouchDB database.
IDOL | An IDOL server. TargetHost is the host name of the machine, and TargetPort is the IDOL index port.
ACI | An ACI server. TargetHost is the host name of the machine, and TargetPort is the ACI server ACI port.
Log | Writes document tracking output to a log stream. You must create a log stream for the `DocTrack` LogTypeCSVs.
Library | A library file. LibraryPath is the full path to the library file. For an SQL library, you must also specify the ConnectionString.

Type: | String
Default: |
Required: | Yes
Configuration Section: | DocumentTracking
Example: | `Backend=ACI`
See Also: | ConnectionString LogTypeCSVs LibraryPath TargetHost TargetPort

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