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New posts in entity-relationship

how to model discount on items in a database?

Problem in mapping fragments in Entity Framework

is optionality (mandatory, optional) and participation (total, partial) are same?

entity-relationship

Core Data Relationship Fault

Parent object is in EntityState.Unchanged, but it still inserted in the Database

SQLAlchemy - Multiple Foreign key pointing to same table same attribute

Should @JoinTable be specified in both sides of a @ManyToMany relationship?

When to use Associative entities?

entity-relationship

Foreign key mapping inside Embeddable class

Implementing one-to-zero-or-one relation in SQL Server

rails 3 scaffolding of relational model

When is it appropriate to use a bidirectional association and when is it not?

@ManyToOne mapping fails to save parent ID

How to add a Map<String, Person> in an entity class?

SQLAlchemy ER diagram in python 3

What's the point of a candidate key?

How are super- and subtype relationships in ER diagrams represented as tables?

NSManagedObject can't get attributes from NSAtomicStoreCacheNode

EF4 code-first: defining object relationships, foreign keys

Generating ERD diagrams within Visual Studio