Food pantries in Pima County Arizona and Tucson provide free or low cost groceries, food, and meals to families and individuals who need help.
One of the important aspects of REST (or at least HTTP) is the concept that some operations (verbs) are idempotent. As Gregor Roth said several years ago: The PUT method is idempotent. An idempotent method means that the result of a successful performed request is independent of the number of times it is executed. Idempotency is also something discussed in the SOA Design Patterns.
An identifier is a name that identifies (that is, labels the identity of) either a unique object or a unique class of objects, where the object or class may be an idea, physical [countable] object (or class thereof), or physical [noncountable] substance (or class thereof). part number is an identifier, but it is not a unique identifierâfor that, a serial number is needed, to identify each instance of the part design.