YOURDON Systems Method: Model-driven Systems DevelopmentThe method described here draws upon twenty years of experience of YOURDON, Inc., whose business has been applying, adapting, and enhancing system development techniques. This intuitive, model-driven approach to systems development is suitable for both the business information and real-time engineering communities. YOURDON Systems Method (YSM) 3.0 has guided thousands of project teams and individuals, helping them meet tight project deadlines while satisfying user requirements and delivering successful solutions within budget. |
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Page 68
... appear . 2.2.4.4.3 System view of subtyping If the supertype entity and one or more subtype entities appear on any system ERD , then at least one system ERD must show the subtyping of the supertype into the subtypes as a graphic icon ...
... appear . 2.2.4.4.3 System view of subtyping If the supertype entity and one or more subtype entities appear on any system ERD , then at least one system ERD must show the subtyping of the supertype into the subtypes as a graphic icon ...
Page 323
... appear as ( or be part of ) an input data flow on the context diagram . For example : DATA FLOW : inputs solution strength indicates that this data flow is required . ( In fact , it is used to detect the event . ) 2.22.5.5.2 Outputs Any ...
... appear as ( or be part of ) an input data flow on the context diagram . For example : DATA FLOW : inputs solution strength indicates that this data flow is required . ( In fact , it is used to detect the event . ) 2.22.5.5.2 Outputs Any ...
Page 375
... appear on at least one . There is no special notation used to show an entity appears on several ERDs . 3.2.3.2.2 Relationships on ERDS A relationship must appear on one ERD . They do not usually appear on more than one ERD , although ...
... appear on at least one . There is no special notation used to show an entity appears on several ERDs . 3.2.3.2.2 Relationships on ERDS A relationship must appear on one ERD . They do not usually appear on more than one ERD , although ...
Contents
Introduction | 1 |
Modelling Tools 35 3 | 35 |
The Enterprise Essential Model | 367 |
Copyright | |
3 other sections not shown
Common terms and phrases
abstract data type access flow allowed associative entity specification bSTD context diagram continuous data flow continuous event flow control process corresponding create data flow diagram data items data process data store defined delete described discrete data flow discrete event flow discrete process discussed Enterprise Essential Model entities and relationships entity relationship diagram entity-event table entry eSTD event store example flow specification function given Guidelines identifier Implementation Model information model inherited Instructor interface internal model machine manual meaning minispec model components Modelling Tools number of occurrences operation organisation output parameters parent ADT participate Patient pencil and paper post-condition process group processors real-world referred relationship frame relationship specification release of YSM response restriction Rules Scheduled course shown stimulus structure structure chart subtype supertype system ERD System Essential Model system modelling techniques terminator Transition Diagram type conversion update variable