3 Terms, definitions, and abbreviated terms
For the purpose of this document, the following definitions apply.
3.1.1 actor
person, an organization, or person acting on behalf of an organization
3.1.2 attribute
unit of information within an entity, defined by a particular type or reference to a particular entity
3.1.2.1 direct attribute
scalar values or collections including Set (unordered, unique), List (ordered), or Array (ordered, sparse) as defined in [ISO 10303-11]
3.1.2.2 inverse attribute
unit of information defining queries for obtaining related data and enforcing referential integrity
3.1.2.3 derived attribute
unit of information computed from other attributes using an expression defined in the schema
3.1.2.4 constraints on attributes
data type restricting the values of attributes
3.1.3 classification
categorization, the act of distributing things into classes or categories of the same type
3.1.4 constraint
restriction for a specified reason
3.1.5 control
directive to meet specified requirements such as for scope, time, or cost
3.1.6 dictionary
collection of words, terms or concepts, with their definition
3.1.7 element
tangible physical product that can be described by its shape representation, material representations, and other properties
3.1.7.1 element occurrence
element's position within the project coordinate system and its containment within the spatial structure
3.1.8 entity
class of information defined by common attributes and constraints as defined in ISO 10303-11
3.1.9 external reference
link to information outside the data set, with direct relevance to the specific information the link originates from inside the data set
3.1.10 feature
parametric information and additional property information modifying the shape representation of an element to which it applies
3.1.11 group
collection of information that fulfills a specified purpose
3.1.12 identification
capability to find, retrieve, report, change, or delete specific instances without ambiguity
3.1.13 instance
occurrence of an entity
3.1.14 library
catalogue, database or holder of data, that is relevant to information in the data set
3.1.15 model
a data set, governed by the structure of an underlying schema, to meet certain data requirements
3.1.16 model view
subset of a schema, representing the data structure required to fulfill the data requirements within one or several exchange scenarios
3.1.16.1 concept
rules on using a subset of the schema structure identified as a concept template to enable a certain functionality within the context of a concept root contained in a model view
3.1.16.2 concept template
the specification of a subset of the schema structure to enable a certain unit of functionality
3.1.16.3 concept root
an entity of a schema used to assign concepts to describe the required functionality
3.1.17 object
anything perceivable or conceivable that has a distinct existence, albeit not material
3.1.17.1 object occurrence
characteristics of an object as an individual
3.1.17.2 object type
common characteristics shared by multiple object-occurrences
3.1.18 process
object-occurrence located in time, indicating "when"
3.1.19 product
physical or conceptual object that occurs in space
3.1.20 project
encapsulation of related information for a particular purpose providing context for information contained within
3.1.21 property
unit of information that is dynamically defined as a particular entity instance
3.1.21.1 property occurrence
unit of information providing a value for a property identified by name
3.1.21.2 property template
metadata for a property including name, description, and data type
3.1.21.3 property set occurrence
unit of information containing a set of property occurrences, each having a unique name within the property set
3.1.21.4 property set template
set of property templates serving a common purpose and having applicability to objects of a particular entity
3.1.22 proxy
object that does not hold a specific object type information
3.1.23 quantity
measurement of a scope-based metric, specifically length, area, volume, weight, count, or time
3.1.24 relationship
unit of information describing an interaction between items
3.1.25 representation
unit of information describing how an object is displayed, such as physical shape or topology
3.1.26 resource
entity with limited availability such as materials, labor, or equipment
3.1.27 schema
the definition of the structure to organize data for storage, exchange and sharing, using a formal language
3.1.28 space
area or volume bounded actually or theoretically
3.1.29 type
basic information construct derived from a primitive, an enumeration, or a select of entities
3.1.29.1 select
construct that allows an attribute value to be one of multiple types or entities
3.1.29.2 enumeration
construct that allows an attribute value to be one of multiple predefined values identified by name
- AEC: Architecture, Engineering, and Construction
- AEC-FM: Architecture, Engineering, Construction, and Facilities Management
- BIM: Building Information Modeling
- GUID: Globally Unique Identifier
- IFC: Industry Foundation Classes
- IFD: International Framework for Dictionaries
- MVD: Model View Definition
- SPF or SPFF: STEP Physical File
- STEP: STandard for the Exchange of Product data
- URI: Uniform Resource Identifier
- UUID: Universally Unique Identifier
- XML: Extensible Markup Language