Salesforce has several APIs for developers to interact with the system. Examples of Salesforce API are :
Streaming : The Streaming API is useful for triggering and receiving notifications when a change is made to Salesforce data according to the defined SOQL query criteria. It can be used to push notifications from the server to the client based on defined criteria.
Bulk : It provides programmatic access for quick loading and querying a huge amount of data into your Salesforce organization.
