====== Requirement ======

^ID |RT |
^Title |Requirement - Requirements |
^Usage |A requirement is used to specify a functional, non-functional requirement or a constraint. |

===== Required Roles =====
  * Requirements Manager

===== Attributes =====

^ID ^Type ^Default ^Title ^Remarks ^
|number |String | | Number |  |
|title |String | | Title | |
|description | Text | | Description | |
|rationle | Text | |Rationale |Reason why the requirement exsist |
|priority |Enumeration |pending |Priority |Weighting of the requirement |
|type |Enumeration |pending |Type |Requirement type | |
|category |Enumeration |pending |Category | |
|maturitylevel |Enumeration |pending |Maturity Level |
|sourcedocument.number |String | |Source Document Number | |
|sourcedocument.title |String | |Source Document Title | |
|sourcedocument.revision |String | |Source Document Revision | |
|sourcedocument.publicationdate |String | |Source Document Publication Date | |
|paragraph.number |String | |Paragraph Number |Paragraph number in the specification or source document |
|paragraph.title |String | |Paragraph Title |Paragraph title in the specification or source document |
|external.id |String | |External ID | External (e.g. customer) ID |
|external.url |URL | |External URL | |


===== Enumerations =====
^Attribute ^Key ^Value ^Remarks ^
|**category** |**pending** |**pending** | |
|**priority** |**pending** |**pending** |The weighting of the requirements has not yet been determined. |
|::: |mandatory | mandatory |The requirement must be fully implemented. |
|::: |shall |shall |The requirement must be fully or partially implemented. |
|::: |should |should |The implementation of the requirement is desirable. |
|**type** |**pending **|**pending** |The requirement type has not yet been determined. |
|::: |environment |Enviroment |General class for environmental requirements. |
|::: |environment.emc |EMC |Electromagnetic Compatinbility |
|::: |environment.esd |ESD |Electromagnetic Discharge |
|::: |environment.magnetic |Magnetic Influence | |
|::: |environment.mediaresistance |Media Resistance | |
|::: |environment.shock |Shock | |
|::: |environment.temperature |Temperature | |
|::: |environment.tightness |Tightness against fluids and/or gases. |
|::: |interface.communication |Interface - Communication | |
|::: |interface.electrical |Interface - Electrical | |
|::: |interface.hmi |HMI | Human Machine Interface | |
|::: |interface.mechanical |Interface - Mechanical | |
|::: |marking |Marking |Marking and Labeling |
|::: |phst |Packing & Transportation | Packing, Handling, Stowing and Transportation |
|::: |safety |Safety | |
|::: |security |Security | |
|::: |system |System |General type for system requirements. |
|::: |system.capability |Capability | |
|::: |system.designconstruction | Design and Construction | |
|::: |system.quality |System Quality |General type for system quality (reliability, availability, maintainability ) |



===== Links =====

^Source ^ID ^Cardinality ^Target ^Remarks ^
|Requirement | applies | one2many |[[metamodel:ddo:normativedocument|Normative Documents]] |  |
|Requirement | definedby | one2many |[[metamodel:ddo:usecase|Use Cases]] |  |
|Requirement | contains | one2many |[[metamodel:ddo:risk|Risks]] |  |
|Requirement | followsfrom | one2many |[[metamodel:ddo:decision|Decisions]] |  |
|Requirement |forcedby | one2one |[[metamodel:ddo:systemelement|System Element]] |  |
|Requirement | leadsto | one2many | [[metamodel:ddo:decision|Decisions]] |  |
|Requirement | refined by | one2many | Requirements | Foreward (down) link with the Requirements Breakdown Structure |
|Requirement | refines | one2one | Requirement | Reverse (up) link with the Requirements Breakdown Structure |
|Requirement | specifies | one2many | [[metamodel:ddo:deliveryitem|Delivery Items]] | |
| |||[[metamodel:ddo:equipment|Equipment]] |
| |||[[metamodel:ddo:function|Functions]] |
| |||[[metamodel:ddo:interfaceitem|Interface Items]]  |
| |||[[metamodel:ddo:systemelement|System Elements]] |
| |||[[metamodel:ddo:systeminterface|System Interfaces]]  |
| |||[[metamodel:ddo:interface|Interfaces]]  |
| |||[[metamodel:ddo:resource|Resources]]  |
| |||[[metamodel:ddo:state|States]]  |
| |||[[metamodel:ddo:task|Task]] |
| |||[[metamodel:ddo:workpackage|Work Packages]] |
|Requirement |verifiedby | one2many |[[metamodel:ddo:test|Tests]] |  |