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Handnote(a simplified e version)

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A simplified version of Handnote of T-Form ER Data Modeling E-version.
To the introduction of T-Form ED Method for beginners.

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Handnote(a simplified e version)

  1. 1. T-Form ER DataModeling HandNote (a Simplifier Version) SYSTEMS DESIGN Co.,Ltd S.Toriyabe
  2. 2. NOTATION T-Form ER Data Modeling 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 2
  3. 3. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 3  T-form ER Data Modeling incorplated the notation of the Superset/Subsets. Superset Header Details
  4. 4. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 4  Header and Details Superset (Entity Name here) Header Details
  5. 5. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 5 Superset Subset Subset  Superset / Subset Superset Classification Subset Subset The Superset subsets of Diference The Superset Subset of isomorphic Classification
  6. 6. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 6 ENTITY RECURSIVE  Recursive
  7. 7. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 7 RESOURCE RESOURCE QUASI-EVENT  Quasi Event
  8. 8. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 8 EVENT EVENT MAPPING LIST  Mapping List
  9. 9. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 9 RESOURCE VIRTUAL ENTITY EVENT VIRTUAL ENTITY  Virtual Entity
  10. 10. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 10 RESOURCE ENTITY ROLE EVENT ENTITY ROLE  Entity Role
  11. 11. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 11 0 or 1 From1 to Many  Cardinality Constraints The Symbols of cardinality Constraints
  12. 12. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 12 Entity Name Identifier Reuse_1(R) Reuse_2(R) ・ ・ ・ Reuse_n(R) Attribute_1 Attribute_2 ・ ・ ・ Attribute_n EntityType  The position of denotes
  13. 13. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 13  E: EVENT  R: RESOURCE  VE: VURTUAL ENTITY  ER: ENTITY ROLE  TS: QUASI ENTITY  ML: MAPPING LIST Credit Check CreditCheckRequestNo. CustomerNo.(R) Customer_Name Request_Date Credit_Limit_AMT ・ ・ ・ E  The position of the denotes
  14. 14. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 14  Identifier Among the data items that are included in an observation entities , which corresponds to the identifie  Reuse(R) Individual indicator(Identifier) of other entities is equivalent to this . Reuse is inserted by the occurrence of Relationship.  Identifier and Reuse Entity Name Identifier Reuse_1(R) Reuse_2(R) ・ ・ ・ Reuse_n(R) Attribute_1 Attribute_2 ・ ・ ・ Attribute_n EntityType
  15. 15. Notation 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 15  Attrributes Which corresponds to the data items that are included in an observation target entity  Date and Timestamp  Text and description  Value  Derivation  Boolean  Binary Data  Others and Copy from other Entities Credit Check CreditCheckRequestNo. CustomerNo.(R) Customer_Name Request_Date Credit_Limit_AMT ・ ・ ・ E  The Attributes
  16. 16. A Examples of “QUASI EVENT” 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 16 Pref.ID. Pref_Name CityID. City_Name Ward_ID Ward_Name Pref City Ward Pref・City・Ward・QE PrefID(R) CityID(R) WardID(R) Pref_Name(d) City_Name(d) Ward_Name(d) Pref・City・QE PrefID(R) CityID(R) City・Ward・QE CityID(R) WardID(R) R R R TS TS TS
  17. 17. A Examples of “QUASI EVENT”_(cont.) 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 17 Pref.ID. Pref_Name CityID. City_Name Ward_ID Ward_Name Pref City Ward Pref・City・Ward・QE PrefID(R) CityID(R) WardID(R) Pref_Name(d) City_Name(d) Ward_Name(d) Pref・City・QE PrefID(R) CityID(R) R R R TS TS
  18. 18. 商談DTL A Example of Entities 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 18 商談 商談HDR 商談No. H_Rev.No. リードNo.(R)  商談日  予算  案件化予 定日  要望総額 (D)  対応時間 商談明細No D_Rev.No... 商談No.(R) H_revNo.(R) 品番(R)  商談詳細 メモ  要望金額  要望数量  希望納期 リード リードNo.  氏名  職位  所属部署 (d) 商談品目 品番  商談許可 期日  品名  説明  提供価格 決定方式 メモ R R E E
  19. 19. The Notation rules for Event -based Entity 1. The Event -based Entity inherit the identifier of the Resource -based Entity by the Relationship as Reuse. 2. When a relationship is drawn to the event from the event , inheritance destination is to inherit the identifier of the original side 3. However , if the relationship of the original side of the cardinality constraint of "n", the new correspondence table “Mapping List” is generated . 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 19
  20. 20. The Notation rules for Event -based Entity 1. It’s not an Event -based Entity to Entity  The Entities other than the Event -based Entity that has the Identifier is a Resource -based Entities 2. The relationships between Resource -based Entity , the Quasi-Event occurs.  It ‘s not affected by the cardinality constraint. 2015 Copyright, All rights reserved. SYSTEMS DESIG Co.,Ltd 20

A simplified version of Handnote of T-Form ER Data Modeling E-version. To the introduction of T-Form ED Method for beginners.

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