Service Now


The CData ADO.NET Provider for ServiceNow gives developers the power to easily connect.NET applications to ServiceNow data, including Schedules, Timelines, Questions, Syslogs, and more. The ServiceNow Data Provider makes this ServiceNow data look like SQL tables in your applications.

Connection String

ServiceNow uses the OAuth 2.0 authentication standard. To authenticate using OAuth, you will need to register an OAuth app with ServiceNow to obtain the OAuthClientId and OAuthClientSecret. In addition to the OAuth values, you will need to specify the Instance, Username, and Password.

Connection String Parameters

Parameter Description
OAuth Client Id Set this to the client Id in your app settings.
OAuth Client Secret Set this to the client secret in your app settings.
OAuthAccessToken Set this to the token returned using the ClientID and ClientSecret.
Instance The Service Now instance.
Username The username of the currently authenticated user.
Password The password of the currently authenticated user.

How to Create Instance

To create an instance for ServiceNow, Open the ServiceNow App, move to developer’s portal and log in using the username and password we provided during the registration. Create an Instance. After Creating the instance, Release the instance using Release Instance Option in actions Column.

Create an App

You can follow the procedure below to register an app and obtain the OAuth client credentials, the OAuthClientId and OAuthClientSecret. Note that you will need to activate the OAuth plugin for your instance if it is not active already.

  1. In the Navigator, click System OAuth -> Application Registry.

  2. Click New and then click Create an OAuth API Endpoint for External Clients.

  3. Select the Active check box and enter the details for your app.

To Generate OAuth 2.0 Tokens

The property must be active for the instance to generate the OAuth 2.0 tokens

After setting the following connection properties, you are ready to Generate the OAuth Tokens for the connection: Parameter | Description — | — InitiateOAuth | Set this to GETANDREFRESH. You can use InitiateOAuth to avoid repeating the OAuth exchange and manually setting the OAuthAccessToken connection property. OAuthClientId | Set this to the Client Id in your app settings. OAuthClientSecret | Set this to the Client Secret in your app settings. Password | Set this to your password. Username | Set this to your username. Instance | Set this to your instance. For example, if your instance URL is, set the Instance property to ‘ MyInstance12345

Data Model

The provider connects to ServiceNow and gets the list of tables and the metadata for the tables by calling the appropriate Web services. Any changes you make to your ServiceNow account, such as activating a plugin, adding new columns to a table, or changing the data type of a column, will immediately be reflected when you connect.


The metadata for the tables in ServiceNow was obtained during run time based on some predefined schemas from ServiceNow and your unique ServiceNow account information. In Tables, you will find a small sample of the tables available in the ServiceNow development environment, which models the core ServiceNow system.

Name Description
ast_contract The ServiceNow table ast_contract.
ast_license_base The ServiceNow table ast_license_base.
change_request The ServiceNow table change_request.
cmdb_ci The ServiceNow table cmdb_ci.
cmdb_metric The ServiceNow table cmdb_metric.
cmn_building The ServiceNow table cmn_building.
cmn_context_help The ServiceNow table cmn_context_help.
cmn_cost_center The ServiceNow table cmn_cost_center.
cmn_department The ServiceNow table cmn_department.
cmn_location The ServiceNow table cmn_location.
cmn_map_page The ServiceNow table cmn_map_page.
cmn_notif_device The ServiceNow table cmn_notif_device.
cmn_notif_device_variable The ServiceNow table cmn_notif_device_variable.
cmn_notif_grmember The ServiceNow table cmn_notif_grmember.
cmn_notif_group The ServiceNow table cmn_notif_group.
cmn_notif_message The ServiceNow table cmn_notif_message.
cmn_notif_service_provider The ServiceNow table cmn_notif_service_provider.
cmn_other_schedule The ServiceNow table cmn_other_schedule.
cmn_relative_duration The ServiceNow table cmn_relative_duration.
cmn_schedule The ServiceNow table cmn_schedule.
cmn_schedule_blackout The ServiceNow table cmn_schedule_blackout.
cmn_schedule_condition The ServiceNow table cmn_schedule_condition.
cmn_schedule_maintenance The ServiceNow table cmn_schedule_maintenance.
cmn_schedule_page The ServiceNow table cmn_schedule_page.
cmn_schedule_span The ServiceNow table cmn_schedule_span.
cmn_timeline_page The ServiceNow table cmn_timeline_page.
cmn_timeline_page_style The ServiceNow table cmn_timeline_page_style.
cmn_timeline_sub_item The ServiceNow table cmn_timeline_sub_item.
diagrammer_action The ServiceNow table diagrammer_action.
expert_panel The ServiceNow table expert_panel.
item_option_new The ServiceNow table item_option_new.
question The ServiceNow table question.
sc_category The ServiceNow table sc_category.
sc_cat_item The ServiceNow table sc_cat_item.
sla The ServiceNow table sla.
sysauto The ServiceNow table sysauto.
sysauto_script The ServiceNow table sysauto_script.
syslog The ServiceNow table syslog.
sysrule The ServiceNow table sysrule.
system_db_object The ServiceNow table system_db_object.
system_dictionary The ServiceNow table system_dictionary.
system_documentation The ServiceNow table system_documentation.
system_import_set_row The ServiceNow table system_import_set_row.
system_script_client The ServiceNow table system_script_client.
system_ui_policy The ServiceNow table system_ui_policy.
system_ui_policy_action The ServiceNow table system_ui_policy_action.
task The ServiceNow table task.
v_field_creator The ServiceNow table v_field_creator.

Stored Procedures

Stored Procedures are used to create materialized views -Tables that contain the result of a query. To work with materialized view, specify a query in the stored procedure call. The Resulting schema stored in XML file, which can be easily modified without calling the stored procedure again.

Name Description
CreateSchema Creates a schema file for the specified table or view.
GetOAuthAccessToken Gets the OAuth access token from ServiceNow.
RefreshOAuthAccessToken Refreshes the OAuth access token used for authentication with various ServiceNow services