UML class diagram: example
class Administrativ eUnits: Ov erv iew
+/administeredBy
«voidable» 0..*
+coAdminister
«voidable» 0..*
«featureType»
Administrativ eUnit
«featureType»
Administrativ eBoundary
+
+
+
+
country :CountryCode
geometry :GM_Curve
inspireId :Identifier
nationalLevel :AdministrativeHierarchyLevel [1..6]
«voidable, lifeCycleInfo»
+ beginLifespanVersion :DateTime
+ endLifespanVersion :DateTime [0..1]
«voidable»
+ legalStatus :LegalStatusValue = "agreed"
+ technicalStatus :TechnicalStatusValue = "edge-matched"
«codeList»
Administrativ eHierarchyLev el
+
+
+
+
+
+
1stOrder
2ndOrder
3rdOrder
4thOrder
5thOrder
6thOrder
+boundary
«voidable»
1..*
+admUnit
«voidable»
+
+
+
+
+
+
country :CountryCode
geometry :GM_MultiSurface
inspireId :Identifier
name :GeographicalName [1..*]
nationalCode :CharacterString
nationalLevel :AdministrativeHierarchyLevel
«voidable, lifeCycleInfo»
1..* + beginLifespanVersion :DateTime
+ endLifespanVersion :DateTime [0..1]
«voidable»
+ nationalLevelName :LocalisedCharacterString [1..*]
+ residenceOfAuthority :ResidenceOfAuthority [1..*]
+lowerLevelUnit
«voidable» 0..*
constraints
{CondominiumsAtCountryLevel}
{AdmininstrativeUnitHighestLevel}
{AdministrativeUnitLowestLevel}
«dataType»
ResidenceOfAuthority
+
name :GeographicalName
«voidable»
+ geometry :GM_Point
INSPIRE UML class diagram for administrative units
Training: INSPIRE Basics
EC JRC
+upperLevelUnit
«voidable» 0..1
1/15
UML (Unified Modeling Language)
Training: INSPIRE Basics
EC JRC
2/15
Class
• Definition: description of a set of objects that
share the same attributes, operations,
relationships, and semantics.
• Objects are also called «instances» of the class
Training: INSPIRE Basics
EC JRC
3/15
Class
visibility
class name (convention: UpperCamelCase)
Car
+ seatNumber : Integer
+ colour : Colour [1..*]
attribute name (convention: lowerCamelCase)
attribute type
multiplicity –
[min..max]
(default: exactly 1)
« A car is characterised by a seat number
and one or several colors. »
Training: INSPIRE Basics
EC JRC
4/15
Inheritage / generalisation
• Definition: taxonomic relationship between a
more general element and a more specific
element.
• Representation:
ClassA
ClassB
« A ClassB instance is also a ClassA instance »
« ClassB instances share the same characteristics as Class A instances »
« ClassB specialises ClassA »
« ClassA is more abstract / generalised than ClassB »
...
Training: INSPIRE Basics
EC JRC
5/15
Inheritage / generalisation
Vehicle
ownerName : String
constructionDate : Date
Car
Boat
draft : Float
abstract classes
(shown in italics)
cannot have instances
Bus
passengerNb : Integer
« Cars, boats, and buses are vehicles »
« All vehicles have a construction date »
« A bus is a vehicle with a passenger number value »
…
Training: INSPIRE Basics
EC JRC
6/15
Association
• Definition: relationship between classes that
specifies connections between their instances
ClassA
roleA
a..b
AssotiationName
roleB
c..d
ClassB
• Example:
Company
Training: INSPIRE Basics
EC JRC
employer
1..*
Employment employee
0..*
Person
7/15
Multiplicity
• Examples:
Company
employed
employer
Employment
0..*
0..*
Person
« Companies and persons are linked with an employment relation »
« A person can be employed by zero, one or several companies »
« A company can employ zero, one or several persons »
parent
Kinship
2
Individual
0..*
child
Training: INSPIRE Basics
EC JRC
« There is a kinship relation between individuals »
« All individuals have exactly 2 parents »
« Each individual can have no, one or
several children »
8/15
Aggregation
• Definition: Aggregation relationship between
instances of a class and several instances of
another class
AggregateClass
a..b
c..d
AggregatedClass
« A ClassA instance is an aggregate of instances of classB »
• Example:
Country
Region
*
1
« A country is an aggregation of regions »
Training: INSPIRE Basics
EC JRC
9/15
Composition
• Definition: Composition relationship between
instances of a class and several instances of
another classe (they cannot exist independently
CompositeClass
ComponantClass
1
*
« A classA instance is a a composite of instances of classB »
• Example:
Book
Page
1
2..*
« A book is composed of pages (at least two) »
Training: INSPIRE Basics
EC JRC
10/15
Navigability
• Definition: Indication, whether instances of one
class can see or know about instances of another
class to which they are related through an
association
Company
supplier
0..2
user
Person
*
« A Person instance knows the Company instances it is associated with »
« A Company instance does not know the Person instances it is associated with »
Training: INSPIRE Basics
EC JRC
11/15
Note
• Definition: Comment or a constraint attached to
a diagram element.
• Usually linked to the element it is related to (with
dashed line)
• In natural language
ClassA
Comment on classA
Training: INSPIRE Basics
EC JRC
12/15
Constraint
• Definition: condition or restriction to satisfy.
• Can be represented in {…} or in a note
• In natural language, or OCL (when possible)
ClassA
ClassA objects should
be like this
Training: INSPIRE Basics
EC JRC
{ClassA objects should
be like that}
13/15
Stereotype
• Definition: Stereotypes extend the semantics,
but not the structure of pre-existing UML elements
(classes, attributes, operations, associations,
roles, packages)
• UML representation:
<< stereotypeName >>
ClassName
<< stereotypeName >>
+ attributeName : DataType
Training: INSPIRE Basics
EC JRC
14/15
Exercise: What is represented here?
class Administrativ eUnits: Ov erv iew
+/administeredBy
«voidable» 0..*
+coAdminister
«voidable» 0..*
«featureType»
Administrativ eUnit
«featureType»
Administrativ eBoundary
+
+
+
+
country :CountryCode
geometry :GM_Curve
inspireId :Identifier
nationalLevel :AdministrativeHierarchyLevel [1..6]
«voidable, lifeCycleInfo»
+ beginLifespanVersion :DateTime
+ endLifespanVersion :DateTime [0..1]
«voidable»
+ legalStatus :LegalStatusValue = "agreed"
+ technicalStatus :TechnicalStatusValue = "edge-matched"
«codeList»
Administrativ eHierarchyLev el
+
+
+
+
+
+
1stOrder
2ndOrder
3rdOrder
4thOrder
5thOrder
6thOrder
+boundary
«voidable»
1..*
+admUnit
«voidable»
+
+
+
+
+
+
country :CountryCode
geometry :GM_MultiSurface
inspireId :Identifier
name :GeographicalName [1..*]
nationalCode :CharacterString
nationalLevel :AdministrativeHierarchyLevel
«voidable, lifeCycleInfo»
1..* + beginLifespanVersion :DateTime
+ endLifespanVersion :DateTime [0..1]
«voidable»
+ nationalLevelName :LocalisedCharacterString [1..*]
+ residenceOfAuthority :ResidenceOfAuthority [1..*]
+lowerLevelUnit
«voidable» 0..*
constraints
{CondominiumsAtCountryLevel}
{AdmininstrativeUnitHighestLevel}
{AdministrativeUnitLowestLevel}
«dataType»
ResidenceOfAuthority
+
name :GeographicalName
«voidable»
+ geometry :GM_Point
INSPIRE UML class diagram for administrative units
Training: INSPIRE Basics
EC JRC
+upperLevelUnit
«voidable» 0..1
15/15