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• A Subset of the LexEVS API: Management, administration and authoring tools are not included for Java remote method invocation (RMI). Central querying functionality is the emphasis.
• Query By Example Querying Services (Deprecated - Removed in 6.5): A Java based version of the database querying interface that makes queries based on calls defined by LexGrid model elements.
• Web Services for SOAP messaging (Deprecated - Removed in 6.5, Replaced by the CTS2 Service): Providing a platform independent service to the database for LexGrid model elements to users of Perl, .net, C/C++, C#, Python and so on.
• XML-HTTP or REST Services(Deprecated - Removed in 6.5, Replaced by the CTS2 Service): Providing LexGrid Model query access to any user with a browser or browser like application.

The following figure shows SOAP via web services, Query by example, and XML-HTTP or REST Services grouped together, and Distributed Remote LexEVS JAVA API with Coded Node Set Operations, Coded Node Graph Operations, Mappings, and History.

Overview of LexEVS Grid Services (No longer available or Supported – Removed in 6.3)

Separate Analytical and Data Services are distributed in war archives for installation in web application containers.

Analytical Grid Service (Deprecated - Removed in 6.3)

Provides the same subset of the LexEVS APIs as the Distributed environment but is ISO 21090 compliant. The following figure shows the LexEVS Grid Service Java API with Coded Node Set Operations, Coded Node Graph Operations, Mappings, and History.

Data Grid Service (Deprecated - Removed in 6.3)

Allows users to make federated queries, using the CQL XML based query language, of LexGrid model elements hosted at LexEVS grid service nodes. The following figure shows a Federated CQL Queries element.

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LexEVS 6.1 features a CTS2 Compatible REST API. The REST server and an accompanying URI resolution service are installed to support this service.