|4.11 Elementary Method "Entity Life History" (ELH)|
Method Entity Life History (ELH) analyses the life cycle of the entities in information systems; in this connection it investigates which integrity requirements and successor actions are relevant for each definition of a new entity, the administration of the entity, and the deletion of the entity. ELH is thus used to define the rules and regulations required for the actions with entities (insert, update, delete).
Means of Representation
Entity Life Cycle Diagrams that are similarly structured as the state transition diagrams in STM are means of representation. An Entity Life Cycle Diagram is generated for each entity. This diagram illustrates all possible entity states and the (elementary) functions changing the states of the entity.
|4.1||SD3.3 - Definition of Requirements for the Functionality||In information systems, Entity Life History defines the requirements on functions and data resulting from integrity conditions. In subproduct Technical Requirements.Overall Function of Element, ELH covers the data-oriented qualitative requirements with regard to the data integrity of the information objects.|
|No.||Interface||Observation||Information in Annex 1|
|5.1||ELH-ER||ELH requires E/R models and analyzes the life cycle of the included entities.||4.9 Interface ELH-ER|
|5.2||ELH-FNET||The function nets describing the possible sequences of functions in an application are balanced with the results of the basic method ELH which document the permitted entity states, the permitted state transitions, and the corresponding functions responsible for this process.||4.10 Interface ELH-FNET|
|GDPA Online Last Updated 01.Jan.2002 Updated by Webmaster Last Revised 01.Jan.2002 Revised by Webmaster|