CRUD (Create, Read, Update, Delete) – Force.com

Controls object-level security of data. These are standard sObject and field methods

isCreateable() Returns true if instances of this object can be created by
the current user, false otherwise.

isAccessible() Returns true if the current user can see instances of this
object type, false otherwise.

isUpdateable() Returns true if instances of this object can be updated by
the current user, false otherwise.

isDeleteable() Returns true if instances of this object can be deleted by
the current user, false otherwise.