Environment Change Information Request Change Definition has subtype of Business Case based upon ConceptPopulation Gives context for Statistical Program Design initiates Gives context for Statistical Need has subtype of specifies Assessment inorporates Evaluation Assessment has subtype of evaluates Acquisition Activity Production Activity Dissemination Activity has subtype of Statistical Program Design Statistical Program Statistical Program Cycle Statistical Activity specifies has is comprised of Process Step Design Process Step Design Execution has uses Statistical Program Design may be of multiple types (Acquisition, Production, Dissemination) specifies Data Channel has Instrument Implementation populates Data Resource uses Mode uses Instrument Control Instrument Question Collection Description is described by uses Interviewer Instruction Question Block Statement may have

Business Service Process Process Step Design Rule Process Method Business Function consists of applies can be performed using performs Statistical Program Design specifies used by uses can be performed using has triggers specifies Transformable Input Process Control Process Step Execution Record Process Output Transformed Output triggers uses as parameters Parameter Input Process Support Input Process Metric reviews has has subtype of triggers Process Input Statistical Activity consists of Process Input Specification Process Output Specification has uses as parameters

Code ListCategory Set Code Item Category Item Code Category contains takes meaning from Concept System Concept groups Classification Scheme Classification Item contains has subtype of Variable Conceptual Domain Enumerated Conceptual Domain Described Conceptual Domain uses is has subtype of has subtype of Enumerated Value Domain Described Value Domain has subtype of Datum Unit of Measure Data Type Represented Variable Instance Variable Value Domain uses describes refines measures describes Classification Family Correspondence Table Map Classification Level Classification Version Classification Variant groups has contains has maps Analysis Unit Collection Unit Population Unit Frame Population Survey Population Target Population Analysis Population has subtype of is aggregate of Code List is groups Category Set Relation exists ? describes

Measure Component Datum Data Structure Data Point Data Set Identifier Component is structured by measures Has observation of Unit Data Structure Component Represented Variable Instance Variable defined by describes has uses Attribute Component has has subtype of has subtype of Dimensional Measure Component Dimensional Data Structure Unit Data Structure Unit Identifier Component Dimensional Identifier Component Unit Attribute Component Logical Record Record Relationship Unit Measure Component Dimensional Attribute Component has has subtype of relates Output Specification Product Dissemination Service Publication Activity Dissemination Activity Representation created from returns collects defines can be performed using includes Information Resource exposes has subtype of Data Resource Provision Agreement provisioned by Data Location has Data Flow provides data at Data Structure describes data for is structured by groups has subtype of Subject Field grouped by Data Provider provides data for