.
1. . File/New ( 21) ErwinToolbar.
21 -
2. ( 22) .
, .
: .
22 -
3. Model/Model Properties ( 23).
23 - "Model Properties"
, , , , , ( 24).
24 -
: .
Definition , Notation ( 25).
25 -
Defaults , ().
26 -
RIDefaults ( 27) , - , .
27 -
4. , ( 29). Format/Preferences ( 28).
28 - Preferences
29
Display ( 30).
30 -
Format/Relationship Display.
5. . Format/Default Fonts&Colors , ( 31).
31 -
6. . Tools/Names/Model Naming Options ( 32) ( 33), ( 34), ( 35).
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32 -
33 -
34 -
35 -
7. . Erwin Toolbox:
Entity ();
IdentifyingRelationship ();
Non- identifyingRelationship ();
Many-to-manyrelationship ().
1: , . Select ().
2: .
8. , . Model ( 36).
36 -
( 37).
37 -
: , , , .
38.
38 -
Definition . , , , , .
Volumetrics ( 39).
Note , , Definition. , - - .
Note 2 , , , . , .
Note 3 ( ).
Icon , .
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39 -
, (UDP), BPwin. UDP User-DefinedProperties Model/UDPDictionary ( 40).
40 - UDPDictionary
B , UDP ( , , . .), . , , . ( 41).
ERwin UDP 6 :
Date. . MM/DD/YY. .
Int. .
Real. .
Text. (ASCII).
List. .
2: User-DefinedPropertyEditor , ~.
Command. - .
Erwin , . History Entities , Comment.
41 - UDP
9. Attributes ( 42).
42 - Attributes
, .
.
General , , .
, , -. , . ERwin 4 :
string;
number;
blob;
datetime.
, , .
: . , Number , , - , Integer.
Model/DomainDictionary ( 43), .
43 -
Datatype Attributes ( 44), DomainDictionary . : , , , , , .
44 Data type
Constraint ( 45) , , .
Definition , .
Note , , .
UDP , . 2: User-DefinedPropertyEditor .
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45 - Constraint
KeyGroup ( 46) .
46 - KeyGroup
:
(primary ) - , . - , . Attributes , , Primary Key General;
. , . (Alternate ) - , . ERwin , ;
, - . . ERwin , . , , (InversionEntries). (InversionEntry) - , , . ERwin Inversion Entry.
Model/KeyGroups ( 47) KeyGroup.
47 - KeyGroups
, KeyGroup , ( 48).
48 -
Members .
. 49 50.
49
50 -
10. , ER-, . (Relationships).
. (Relationship VerbPhrase). (Verb Phrase) , , - .
:
(identifying relationship) ;
;
(non-identifying relationship) .
(Depend entity) (Independent entity). ( ) ( ) . IDEF1X . , .
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. . FK.
, . .
, .
. (Cardinality) .
4 :
, 0, 1 - ;
P , 1 ( );
Z , 0 1 ( );
, .
(Rolename) , , . , , , .
, , , .
( fishhook), . . , .
: , ( + ), .
Model/Relationships Relationship Properties ( 51).
51 -
General (Cardinality), (RelationshipType), (Nulls) (VerbPhrase).
Definition .
Role name ( 52) .
52 - Rolename
RIActions , UDP .
53.
53 -
, , , . .
2: ( , ).
:
, ;
, . ;
, ( , );
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(subtyperelationship) , . , , , -.
(discriminator) , , .
2 . (Complete subtype relationship) - . , , .
, .
CompleteSub-category ErwinToolbox (). ( , ), : , .
, . SubtypeProperties ( 54).
54 -
( ) ( 55).
55 -
( ), . . 56.
56 -
( 57).
57 -
. , , . ( 58).
58 -
(manytomanyrelationship) . Verb Phrase . , , , , . . , , . 59.
59 - --
--, , , , , , . - Create Assotiation Etity, --.