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Tag subtypes - Это страница 1 - GeneraCodice
Single table with multiple NULL columns vs multiple tables
https://www.generacodice.com/ru/articolo/3127808/single-table-with-multiple-null-columns-vs-multiple-tables
mysql
-
PHP
-
database-design
-
subtypes
dba.stackexchange
Reviewing the design of a database about animals of two distinct species
https://www.generacodice.com/ru/articolo/2951784/reviewing-the-design-of-a-database-about-animals-of-two-distinct-species
sql-server
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database-design
-
sql-server-express
-
sql-server-2017
-
subtypes
dba.stackexchange
How to handle the methods that have been added for subtypes in the context of polymorphism?
https://www.generacodice.com/ru/articolo/2935472/how-to-handle-the-methods-that-have-been-added-for-subtypes-in-the-context-of-polymorphism
polymorphism
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design-patterns
-
object-oriented
-
subtypes
softwareengineering.stackexchange
EER Diagram - subclasses which are neither disjoint nor fully overlapping
https://www.generacodice.com/ru/articolo/2901179/eer-diagram-subclasses-which-are-neither-disjoint-nor-fully-overlapping
database-design
-
schema
-
erd
-
subtypes
dba.stackexchange
Extended Entity-Relationship Diagram: Do the sub classes have foreign keys or primary keys?
https://www.generacodice.com/ru/articolo/2831495/extended-entity-relationship-diagram-do-the-sub-classes-have-foreign-keys-or-primary-keys
database-design
-
schema
-
erd
-
subtypes
dba.stackexchange
What is the correct way to enforce unique “IS-A” relationship?
https://www.generacodice.com/ru/articolo/2808616/what-is-the-correct-way-to-enforce-unique-is-a-relationship
database-design
-
subtypes
dba.stackexchange
Inserting into subtype table values from supertype table in oracle
https://www.generacodice.com/ru/articolo/2751713/inserting-into-subtype-table-values-from-supertype-table-in-oracle
oracle
-
insert
-
subtypes
dba.stackexchange
How are typeclasses in functional languages different from interfaces in OO languages?
https://www.generacodice.com/ru/articolo/2712321/how-are-typeclasses-in-functional-languages-different-from-interfaces-in-oo-languages
polymorphism
-
functional-programming
-
subtypes
softwareengineering.stackexchange
Normalising shared entities and applying constraints
https://www.generacodice.com/ru/articolo/2686554/normalising-shared-entities-and-applying-constraints
database-design
-
normalization
-
subtypes
-
design-pattern
dba.stackexchange
Should I put common fields in each specific tables or one common table then join when data selecting?
https://www.generacodice.com/ru/articolo/2678041/should-i-put-common-fields-in-each-specific-tables-or-one-common-table-then-join-when-data-selecting
database-design
-
subtypes
dba.stackexchange
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