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24 26-Nov-2021 10:22 11 KB JMyers to previous | to last NAMING CONVENTION ==> NAMING CONVENTION AND STANDARDS
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Page References

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ERD
ERD

Version management

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%%center
||[ERDs by Module:|ERD] | [AM|ERD-AM] | [AT|ERD-AT] | [BE|ERD-BE] | [CM|ERD-CM] |[FC|ERD-FC] | [HR|ERD-HR] | [LR|ERD-LR] | [PR|ERD-PR] | [RE|ERD-RE] | [RX|ERD-RX] | [SA|ERD-SA] | [SH|ERD-SH] | [TD|ERD-TD] | [TS|ERD-TS] | [UT|ERD-UT]
%%
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!!!ENTITY-RELATIONSHIP DIAGRAMS
%%warning
\\
__ATTENTION:__
*The ERDs in the Knowledge Base are updated as of the 5.04 Release. They will not be updated to reflect any changes done in the 5.05 Release\\
\\
%%
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The modules in the application are comprised of many different tables, such as the ‘Identity’ or ‘Assignment’. The tables within the system interact with one another and share information. Through these associations, ‘relationships’ form and tables can become dependant on others. The Entity Relationship Diagrams (ERDs) in this manual will explain the interaction that tables in the application have with one another.
The modules in the application are comprised of many different tables, such as ‘Identity’ or ‘Assignment’. The tables within the system interact with one another and share information. Through these associations, ‘relationships’ form and tables can become dependent on others. The Entity Relationship Diagrams (ERDs) in this manual will explain the interaction that tables in the application have with one another.
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[{TableOfContents }]
!!Tables
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This basic box will display only the entity name (ALIAS) and entity alias (EAL). Please note that the entity name will eventually be used in the table [Naming Convention|NAMING CONVENTION AND STANDARDS]. (e.g. The ‘Alias’ entity name will be referenced in the table name ‘P2K_HR_ALIASES‘.)
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[{Image src='ERD_Fields.JPG' width='325' align='center' link='attach/ERD/ERD_Fields.JPG'}]
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The shaded background indicates that the table is [date sensitive]. These tables will always have Effective (date) and Expiry (date) columns, although not shown on the ERD.
The shaded background indicates that the table is [date sensitive|DATE SENSITIVE]. These tables will always have Effective (date) and Expiry (date) columns, although not shown on the ERD.
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The shading will appear grey on a black and white printout; however, it may appear yellow if the ERD is brought up on a computer.
[{Image src='ERD_Shaded.JPG' width='140' align='center' link='attach/ERD/ERD_Shaded.JPG'}]
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The shading will appear gray on a black and white printout; however, it may appear yellow if the ERD is brought up on a computer.
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A table may also appear on an ERD with a bold border. This border indicates that the information in this table is provided as part of the [seed data].
A table may also appear on an ERD with a bold border. This border indicates that the information in this table is provided as part of the [seed data|SEED DATA].
[{Image src='ERD_Bold.JPG' width='101' align='center' link='attach/ERD/ERD_Bold.JPG'}]
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[{Image src='ERD_Dotted.JPG' width='244' align='center' link='attach/ERD/ERD_Dotted.JPG'}]
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[{Image src='ERD_Italic.JPG' width='115' align='center' link='attach/ERD/ERD_Italic.JPG'}]
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!Lines
Solid Line Vs. Broken Line
!!Lines
!Solid Line Vs. Broken Line
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The solid line indicates that the Parent table (EID) is MANDATORY for the Dependant table (ECT). This means that the Parent table must be filled BEFORE the Dependant table can be completed. A broken line indicates that the Dependant table (ECT) is OPTIONAL for the Parent table (EID). This means that the Parent table can be completed WITHOUT the Dependant table having been filled.
[{Image src='ERD_BrokenLine1.JPG' width='382' align='center' link='attach/ERD/ERD_BrokenLine1.JPG'}]
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The solid line indicates that the Parent table (EID) is MANDATORY for the Dependent table (ECT). This means that the Parent table must be filled BEFORE the Dependent table can be completed. A broken line indicates that the Dependent table (ECT) is OPTIONAL for the Parent table (EID). This means that the Parent table can be completed WITHOUT the Dependent table having been filled.
[{Image src='ERD_BrokenLine2.JPG' width='400' align='center' link='attach/ERD/ERD_BrokenLine2.JPG'}]
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[{Image src='ERD_BrokenLine3.JPG' width='378' align='center' link='attach/ERD/ERD_BrokenLine3.JPG'}]
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[{Image src='ERD_Written.JPG' width='391' align='center' link='attach/ERD/ERD_Written.JPG'}]
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[{Image src='ERD_Dependent.JPG' width='350' align='center' link='attach/ERD/ERD_Dependent.JPG'}]
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In this instance, the line starts as a single line at the Entity table and ends in many lines at the Unit table. This means that the entity may have many units associated with it, however, the unit cannot belong to more than one entity. Another way this can be expressed is that the Entity table is the PARENT of the Unit table and the Unit table is the DEPENDANT of the Entity table.
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There can be a situation where two tables are parents to each other, which will be explained further on in this manual.
In this instance, the line starts as a single line at the Entity table and ends in many lines at the Unit table. This means that the entity may have many units associated with it, however, the unit cannot belong to more than one entity. Another way this can be expressed is that the Entity table is the PARENT of the Unit table and the Unit table is the DEPENDENT of the Entity table.
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There can be a situation where two tables are parents to each other, which will be explained further on.
!Foreign Keys
Dependent tables will always have a [Foreign Key|FOREIGN KEY] that identifies its parent table.
The presence of the "many" branch (also known as crow's feet) indicates this foreign key.
For instance, within the Alias table, there will be a foreign key column (EID_ID) for the parent table, Identity.
Parent tables do not keep foreign keys and therefore their dependent tables can only be traced within the Oracle Data dictionary as referential constraints
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__Parent/Dependant Relationship__
In the first scenario, one table is the parent with two lines moving towards a dependant table.
*** PICTURE ***
__Parent/Dependent Relationship__
In the first scenario, one table is the parent with two lines moving towards a dependent table.
[{Image src='ERD_Parent1.JPG' width='228' align='center' link='attach/ERD/ERD_Parent1.JPG'}]
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*** PICTURE ***
[{Image src='ERD_Parent2.JPG' width='160' align='center' link='attach/ERD/ERD_Parent2.JPG'}]
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A bold line between two tables indicates that if you delete the record in the parent table, the associated record in the dependant table will be deleted. This is know as a Cascade Delete.
***PICTURE ***
A bold line between two tables indicates that if you delete the record in the parent table, the associated record in the dependent table will be deleted. This is know as a Cascade Delete.
[{Image src='ERD_BoldLine.JPG' width='446' align='center' link='attach/ERD/ERD_BoldLine.JPG'}]
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*** PICTURE ***
[{Image src='ERD_CurvedLine.JPG' width='306' align='center' link='attach/ERD/ERD_CurvedLine.JPG'}]
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The dependant records (subsidiaries) will refer back to the parent record in the DEN_ID key.
The dependent records (subsidiaries) will refer back to the parent record in the DEN_ID key.
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|Dependant| 10 |D Corp| 1
|Dependent| 10 |D Corp| 1
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*** PICTURE ***
This exclusive join means that the contact table may be tied to either the User table or the Identity table, but not both. These tables
cannot have the same contact.
Occasionally you will see an exclusive join that isn’t connected to multiple tables. This simply means that for brevity sake, not all dependant tables are displayed on the chart
*** PICTURE ***
[{Image src='ERD_ExclusiveJoin1.JPG' width='361' align='center' link='attach/ERD/ERD_ExclusiveJoin1.JPG'}]
This exclusive join means that the contact table may be tied to either the User table or the Identity table, but not both. These tables cannot have the same contact.
Occasionally you will see an exclusive join that isn’t connected to multiple tables. This simply means that for brevity sake, not all dependent tables are displayed on the chart
[{Image src='ERD_ExclusiveJoin2.JPG' width='272' align='center' link='attach/ERD/ERD_ExclusiveJoin2.JPG'}]
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This diamond means the parent table cannot be changed on the dependant record.
*** PICTURE ***
This diamond means the parent table cannot be changed on the dependent record. This indicates a [non-transferable|NON-TRANSFERABLE] constraint.
[{Image src='ERD_Transferable.JPG' width='323' align='center' link='attach/ERD/ERD_Transferable.JPG'}]
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----
![Notes|Edit:Internal.ERD]
[{InsertPage page='Internal.ERD' default='Click to create a new notes page'}]
This page (revision-40) was last changed on 26-Nov-2021 10:22 by Karen ParrottTop