StateModelRev05f.ppt
- RJL rev. 050918 1
StateModel Design 1
Data Stucture Diagram (DSD/EERD)
Data Stucture Diagram (DSD/EERD)
StateModel SM
abbrev
name
SMdescription
EventType ET
label
ETdescription
State ST
stateName
ARname
ARptr (FPindex) *
STdescription
Transition TR
EventLabel
TRdescription
Enable
EN
SchemaVersion SV
SchemaName
VersionNo
LastModAuthor
LastModDate
Each table must have a unique two-letter abbreviation
ttabbr:
Each TTabbrev produces a primary key (pkey) attribute:
Each 1:M relationship produces a foreign key (fkey);
Attribute formats
and descriptions must also be acquired: These are added on this diagram or directly to file
StateModel.sch, which comprises a Data Dictionary of entities,
classes, relations and attributes.
This state model
belongs to the LCP namespace subschema, which also includes Tables AC, AI and EI
(In BDE: draw non-key attributes only;
primary and foreign keys are implicit)
ActionRoutine AR
ARname
ARdescription
//Alternate home for //STs
AR attributes
FuncPtr Array[ ]
(LCP-declared;
link-time-updated;
index initialized in
ST)
TBD:
ES: Event Type Signature (Actual Args)
FormalParam FP
(TBD: Constraints on
actual
args in EI)