Partner WSDL:a) The Partner WSDL is loosely typed.b) The Partner WSDL can be used to reflect against/interrogate any configuration of Salesforce (ie. any organization's Salesforce configuration).c) The Partner WSDL is static, and hence does not change if modifications are made to an organization's Salesforce configuration.For the reasons outlined above, the Partner WSDL is intended primarily for Partners.To download a WSDL file when logged into Salesforce:1. Click Setup | Customize | Develop | API 2. Click the link to download the appropriate WSDL.3. Save the file locally, giving the file a ".wsdl" extension.49.viewstate limit?135kb50.Can you use dml statement in visualforce compoenent controller ?Ans: To use dml in visualforce component you have to declare allowdml=true in visualforce component otherwise you will get an exception "DML is currently not allowed"