Salesforce Attachments

Salesforce attachment represents a file that a User has uploaded and attached to a parent standard or custom object record.

If the user has create permission on a parent object, then only he/she can able to attach an attachment to the parent object.

Attachment can support following calls :

create(), delete(), describeSObjects(), getDeleted(), getUpdated(), query(), retrieve(), search(),undelete(), update(), upsert()