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# Research Services Schemas Overview

The Research Service Software Development Kit defines schemas for registration requests and responses, queries, and responses to queries. The following is an outline of these schemas.

Registration schemas

This set of schemas helps you to create a valid registration request and response.

- The registration request schema, specified by the urn:Microsoft.Search.Registration.Request namespace, defines a registration request to a research service provider.
- The registration response schema, specified by the urn:Microsoft.Search.Registration.Response namespace, defines a registration response from a research service provider.
- The discovery schema, specified by the http://schemas.microsoft.com/Office/Research/2002/8/Discovery namespace, defines the response that a discovery service uses to return a list of services to be advertised or automatically installed.

Query schemas

This set of schemas helps you to create a valid query packet.

- The query schema, specified by the urn:Microsoft.Search.Query namespace, defines a query packet which can contain other queries that correspond to each of the provider's services.
- The query context schema, specified by the urn:Microsoft.Search.Query.Office.Context namespace, defines context information augmenting a query. The root element in this schema is designed to be used inside the Microsoft.Search.Query.xsd schema.
- The query keywords schema, specified by the urn:Microsoft.Search.Query.Office.Keywords namespace, defines a list of keywords representing a query. The root element in this schema is designed to be used inside the Microsoft.Search.Query.xsd schema.
- The service parameters schema, specified by the urn:Microsoft.Search.Office.ServiceParameters namespace, defines form information augmenting a query. The root element in this schema is designed to be used inside the Microsoft.Search.Query.xsd schema.

Response schemas

This set of schemas helps you to create a valid response to a query.

- The response schema, specified by the urn:Microsoft.Search.Response namespace, defines a response packet from a research service provider, which can in turn contain other responses, corresponding to each of the provider's research services.
- The response content schema, specified by the urn:Microsoft.Search.Response.Content namespace, defines rich content and actions that can be returned as part of a response packet. The root element is used within the Microsoft.Search.Response.xsd schema.
- The response document schema, specified by the urn:Microsoft.Search.Response.Document namespace, defines a document type that can be returned as part of a response packet. The document type may contain a title, description, or URL. The root element is used within the Microsoft.Search.Response.xsd schema.
- The response form schema, specified by the urn:Microsoft.Search.Response.Form namespace, defines a form that can be returned as part of a response packet. The response form schema describes all the form elements and their relationships. A form enables a research service to interact with the user. A form is submitted when the user clicks a form element having the @action="requery" attribute. At this point, a query containing the form's data is generated to requery only the same research service. The Research task pane is then updated with search results from that service.

Types schema

The types schema, specified by the urn:Microsoft.Search.Types namespace, defines the simple types used by multiple schemas in urn:Microsoft.Search. It is shared by the registration, query, and response schemas.
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