Definition
A model that defines the mandatory and optional attributes needed for a Collection Descriptor or a Transfer Object Type Descriptor.
Introduction
PAIS uses the term ‘Descriptor’ for a Transfer Object Type Descriptor or a Collection Descriptor, and the phrase ‘Transfer Object’ refers to an instance. The phrase ‘Transfer Object Type’ or ‘type of Data Object’ is used to refer to the class of a Transfer Object or Data Object.
PAIS 2.2 explains that:
One of the objectives of the Formal Definition Phase is to define the Data Objects, where hereafter a Data Object is understood to be one or more data files, to be transferred as possibly more complex data structures called Transfer Objects. Each Transfer Object is an instance of a particular Transfer Object Type. Each Transfer Object Type is described in detail by a Transfer Object Type Descriptor. A Transfer Object Type Descriptor consists of a set of mandatory, optional, and possibly user-defined attributes, and is generated for each type of Transfer Object. A collection of Transfer Object Types, or a collection of other collections, is described by a Collection Descriptor. It also consists of a set of mandatory, optional, and possibly user defined attributes….The set of Descriptors for a Producer-Archive Project constitutes a Model called the Model of Objects for Transfer (MOT) for that project.
Each Descriptor must be associated with a Descriptor Model that defines the mandatory and optional attributes needed to describe types of Transfer Object and Collections.
PAIS Descriptor Model Specifications
Section 3 of PAIS outlines:
Model for the Transfer Object Type Descriptor (CCSD0014)
Model for the Collection Descriptor (CCSD0015)
Dalhousie Libraries Descriptor Models
The Dalhousie Libraries has defined a set of Descriptor Models:
Collection Descriptor Models
Model for the Archives Permanent Collection Descriptor
Transfer Object Type Descriptor Models
Container