An entity-relationship model (ERM) is an abstract and conceptual representation of data, information aspects of a business domain or its process requirements.
I'm using EF and when I do this: foreach (var reg in detail.Regs) { this.db.Regs.DeleteObject(reg); } I …
entity-framework-4 entity-relationshipConsider the following database schema: create table UserGroup ( id int not null auto_increment, name varchar(200), primary key(id)); create …
java hibernate jpa join entity-relationshipI'm setting up a basic test data util and want to keep track of all the data that the EntityManager …
jpa persistence entity-relationshipSuppose there are two entities called Employee and Campaign. One employee can work on many campaigns. And one campaign can …
entity-relationshipI am using eclipselink for JPA. I have an entity, which has a composite key fabricated out of two fields. …
java jpa entity-relationship composite-key embeddableI was only able to find the following two differences: The relationships in an E-R model are explicitly defined, while …
database entity-relationship relational junction-table entity-relationship-modelI am trying to Eagerly load all the related entities or collection of Entity in one call. My Entities Looks …
c# entity-framework-4.1 code-first entity-relationship eager-loadingTracking a familial relationship in Core Data (1 parent entity + 2 types of children, one of which is recursive), trying to create …
xcode core-data interface-builder entity-relationshipI am learning how to interpret Entity Relationship Diagrams into SQL DDL statements and I am confused by differences in …
database database-design erd entity-relationshipI have two tables: 'movies' and 'users'. There's an n:m relationship between those, describing what movies a user has …
sql mysql join entity-relationship