How do you implement the locking functionality of records in apex ?

481

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How to get the external id from other system and update it in salesforce externalid field, if you get null value from another system how you will through an error?

604

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How can you expose a apex class as web service? And how to obtain a wsdl file for exposed class?

537

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What is the difference between role and profile in salesforce ?

504

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Given a business requirement, wherein you have to execute all the available actions in a single workflow rule, what would be the sequence of actions ?

652

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What is the use of communities in salesforce ?

578

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what are future methods and where are they used ?

517

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What is the use of the tag in lightning ?

463

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How to add contacts to salesforce?

490

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What is the apex in salesforce?

537

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What are the advantages of lightning?

482

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What are the different ajax action tags? What does each do?

445

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What is a dashboard? What are the different components?

490

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What are the various ways of deployment in salesforce?

502

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How are users differentiated in salesforce?

526

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