标签artity-relationship - 这是页3 - GeneraCodice

Do all tables need Primary keys or is Foreign key enough?

https://www.generacodice.com/cn/articolo/13483387/do-all-tables-need-primary-keys-or-is-foreign-key-enough

  foreign-keys  -  entities  -  entity-relationship  -  primary-key  -  database-schema

StackOverflow

ER (Entity Relationship) Diagram == Relational Schema Database?

https://www.generacodice.com/cn/articolo/13474396/er-entity-relationship-diagram-relational-schema-database

  schema  -  uml  -  entity-relationship  -  database-schema

StackOverflow

ER-Diagram: Can an ENTITY be an ATTRIBUTE to ANOTHER ENTITY?

https://www.generacodice.com/cn/articolo/13466599/er-diagram-can-an-entity-be-an-attribute-to-another-entity

  database  -  entity-relationship

StackOverflow

How to setup Doctrine self-referencing, non-unique relationship

https://www.generacodice.com/cn/articolo/13464145/how-to-setup-doctrine-self-referencing-non-unique-relationship

  entity-relationship  -  self-reference  -  symfony  -  doctrine-orm

StackOverflow

Supertype and subtype relationships

https://www.generacodice.com/cn/articolo/13441240/supertype-and-subtype-relationships

  database-design  -  entity-relationship

StackOverflow

ERD for airports and routes database

https://www.generacodice.com/cn/articolo/13396843/erd-for-airports-and-routes-database

  database  -  database-design  -  entity-relationship

StackOverflow

This should not be nil

https://www.generacodice.com/cn/articolo/13394431/this-should-not-be-nil

  ruby-on-rails  -  entity-relationship  -  rspec  -  relationship  -  models

StackOverflow

ER diagram have include all tables & all attributes or not?

https://www.generacodice.com/cn/articolo/13387246/er-diagram-have-include-all-tables-all-attributes-or-not

  entity-relationship

StackOverflow

How can I implement a dual relationship (Null, Not Null) in MySQL without creating two classes?

https://www.generacodice.com/cn/articolo/13302883/how-can-i-implement-a-dual-relationship-null-not-null-in-mysql-without-creating-two-classes

  mysql  -  sql  -  database-design  -  foreign-keys  -  entity-relationship

StackOverflow

Phalcon php orm can't relate tables

https://www.generacodice.com/cn/articolo/13279273/phalcon-php-orm-can-t-relate-tables

  PHP  -  orm  -  entity-relationship  -  model  -  phalcon

StackOverflow

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