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Details

  • Type: Bug Bug
  • Status: Open Open
  • Priority: Minor Minor
  • Resolution: Unresolved
  • Component/s: Documentation
  • Labels:
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  • Environment:
    Irrelevant

Description

URL: http://www.doctrine-project.org/projects/orm/2.0/docs/reference/inheritance-mapping/en#single-table-inheritance

Single Table Inheritance
Single Table Inheritance is an inheritance mapping strategy where all classes of a hierarchy are mapped to a single database table. In order to distinguish which row represents which type in the hierarchy a so-called discriminator column is used.

External resource http://martinfowler.com/eaaCatalog/singleTableInheritance.html seems do be unavailable.

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Jan Pieper added a comment -

URL: http://www.doctrine-project.org/projects/orm/2.0/docs/reference/inheritance-mapping/en#class-table-inheritance

Class Table Inheritance
Class Table Inheritance is an inheritance mapping strategy where each class in a hierarchy is mapped to several tables: its own table and the tables of all parent classes. The table of a child class is linked to the table of a parent class through a foreign key constraint. Doctrine 2 implements this strategy through the use of a discriminator column in the topmost table of the hierarchy because this is the easiest way to achieve polymorphic queries with Class Table Inheritance.

Same link.

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Jan Pieper added a comment - URL: http://www.doctrine-project.org/projects/orm/2.0/docs/reference/inheritance-mapping/en#class-table-inheritance Class Table Inheritance Class Table Inheritance is an inheritance mapping strategy where each class in a hierarchy is mapped to several tables: its own table and the tables of all parent classes. The table of a child class is linked to the table of a parent class through a foreign key constraint. Doctrine 2 implements this strategy through the use of a discriminator column in the topmost table of the hierarchy because this is the easiest way to achieve polymorphic queries with Class Table Inheritance. Same link.
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Jan Pieper added a comment -

Resources seem to be available again.

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Jan Pieper added a comment - Resources seem to be available again.

People

  • Assignee:
    Jonathan H. Wage
    Reporter:
    Jan Pieper
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    Updated: