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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+.. Copyright (C) 2019 IBM.
+
+Resource Source 
+---------------
+
+Input:
+======
+Expects the value to be provided as input to the request.
+
+source-input:
+
+{
+  "description": "This is Input Resource Source Node Type",
+  "version": "1.0.0",
+  "properties": {},
+  "derived_from": "tosca.nodes.ResourceSource"
+}
+
+
+Default:
+========
+Expects the value to be defaulted in the model itself.
+
+source-default:
+
+{
+  "description": "This is Default Resource Source Node Type",
+  "version": "1.0.0",
+  "properties": {},
+  "derived_from": "tosca.nodes.ResourceSource"
+}
+
+
+sql:
+====
+
+Expects the SQL query to be modeled; that SQL query can be parameterized, and the parameters be other resources resolved through other means. If that's the case, this data dictionary definition will have to define key-dependencies along with input-key-mapping.
+
+CDS is currently deployed along the side of SDNC, hence the primary database connection provided by the framework is to SDNC database.
+
+|image0|
+
+.. |image0| image:: image0.jpg
+   :width: 7.88889in 
+   :height: 4.43750in
+
+.. toctree::
+   :maxdepth: 1  
+
+	sourceprimarydb
+	
+Connection to a specific database can be expressed through the endpoint-selector property, which refers to a macro defining the information about the database the connect to. Understand TOSCA Macro in the context of CDS.
+
+.. toctree::
+   :maxdepth: 1 
+
+	dbsystem
+
+
+REST:
+=====
+
+Expects the URI along with the VERB and the payload, if needed.
+
+CDS is currently deployed along the side of SDNC, hence the default rest connection provided by the framework is to SDNC MDSAL.
+
+|image1|
+
+.. |image1| image:: image1.jpg
+   :width: 7.88889in 
+   :height: 4.43750in
+
+.. toctree::
+   :maxdepth: 1
+   
+   rest
+
+Connection to a specific REST system can be expressed through the endpoint-selector property, which refers to a macro defining the information about the REST system the connect to. Understand TOSCA Macro in the context of CDS.
+
+Few ways are available to authenticate to the REST system:
+
+	* token-auth
+	* basic-auth
+	* ssl-basic-auth
+	
+For source code of Authentication click below link:
+
+.. toctree::
+   :maxdepth: 1
+   
+   auth
+
+Capability:
+===========
+
+Expects a script to be provided.
+
+|image2|
+
+.. |image2| image:: image2.jpg
+   :width: 7.88889in 
+   :height: 4.43750in
+   
+   
+.. toctree::
+   :maxdepth: 1   
+
+	source-capability