This question already has answers here: 开发者_JAVA百科 Closed 11 years ago. Possible Duplicate: When we need to use 1-to-1 relationship in database design?
I have read http://vard-lokkur.blogspot.com/2010/10/json-jackson-to-rescue.html http://vard-lokkur.blogspot.com/2010/10/json-jackson-serialization-narrowed.html
I have a legacy database which can\'t be changed because it\'s hooked up to a 3rd party application. One of the queries I\'m working with for a new application looks like the following:
I use asp.net 4 and DataSets for accessing the database. There are two tables with one-to-one relationship in the database. It means that both tables have the same column as a primary key (say Id), an
I would like to imitate the functionality that the Django Admin site offers when a model has a OneToOneField to another model, where it is optional to fill the form for the OneToOne model. The form fo
My question is similar to this one : --> Many to one configuration using EF 4.1 code first There are some fluent API solutions on google, with overriding \"OnModelCreating\" method and manually sett
I have the following view 开发者_开发技巧vw_Resources -> ResourceId -> Name -> ReportsTo (maps to ResourceId)
I have an entity that has reference to another entity that represents the current state of certain properties, thus allowing me to keep track of the history of changes made. For this, I have defined a
I am trying开发者_如何学运维 to model a \"User can have 0 or 1 set of preferences\" where the preferences table has a primary key of UserId which is also a foreign key to the User entity, a la this po
I want to map an optional 1-to-1 relationship in an existing database with EF Code First. Simple schema:
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