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Questions tagged [entities]

Entity-relationship model (ER model for short) is an abstract and conceptual representation of data.

In software engineering, an entity-relationship model (ER model for short) is an abstract and conceptual representation of data. Entity-relationship modeling is a database modeling method, used to produce a type of conceptual schema or semantic data model of a system, often a relational database, and its requirements in a top-down fashion. Diagrams created by this process are called entity-relationship diagrams or ER diagrams.

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Linq to Entities convert one entity to similar

I have an Entity model with entities of Person and LogPerson. they are identical except that LogPerson has 2 additional fields (LogPersonID, CreateDate). How can I cast a LogPerson into a Person so that the VB.NET code that follows my Linq code…
gjones
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Mapping persisted entities to mongo using spring

In spring documentation talking about Customizing type mapping Reference Using @TypeAlias and TypeInformationMapper .. but I cannot find any practical example can someone please reference? When defining MappingMongoConverter it is related the…
assaf_miz84
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storing Linq To Entities query in new object projection

I have a Linq to Entities query and I want to select some specific columns and store the new object into a pre-defined object. However, I'm getting the error does not contain a constructor that takes 0 arguments. Not sure what is wrong…
starvingPhilosopher
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Symfony2 : Find through several entities

I'm facing an issue while searching through several entities with Doctrine2. I have an entity People joined to another entity Email on a "OneToMany" relationship :
Pierre Rolland
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asp.net Dynamic Data Entities Site sorting rows

I am working on an admin area that is a Dynamic Data Entities site. My tables have an Int column called OrderID that is meant to be the displayed order for the Admin and front end of my site. Does the asp.net Dynamic Data site have anything built in…
chris_dotnet
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DataMapper with multiple entities

Seeking some best practice advice. Basically I have a large entity that consists of various properties where some properties are other entities. What is the best practice of "instantiating" the big entity in my datamapper? Do I call the other…
neph
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Symfony 2 - Doctrine - oneToMany : delete from many

I have two entities : Episode and Version. When I tried to delete a version a get an exception: Notice: Undefined index: episode in /var/www/Mendrock/vendor/doctrine/orm/lib/Doctrine/ORM/Persisters/BasicEntityPersister.php line 1561 I already…
manu
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symfony2 child entity

I have a number of different types of content containers that I use in different ways. They have all the same properties so I can use the same class, but since I use them differently, I am thinking of a way to do that nicely. In my…
Matt Welander
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Upload assets for entities asynchronously (so: prior to persistency of entity)

In our web applications we struggle with a problem reoccurring constantly. An easy example is a blog post: it has a title, lead & body text and an image. Our UX designers would like to let users upload the image asynchronously. This becomes an issue…
Jurian Sluiman
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CRM 2011 using organization.svc as a web reference

In CRM 4, I used to add web reference in my visual studio project of the CRMService.asmx and it would bring me all the entities (including custom entities) and all the services. Now I've moved to CRM 2011 and I dont really understand complitely how…
Greg Oks
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Core Data NSMutable Set

I am using core data and set up a one to many relationship for one of my entities. I have two entities. "Team" and "Player" I am trying to add an NSMutableSet of players to the team. Below is how I am attempting to add a player to the…
Luke
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How to get unique values retrieve from Coredata iphone app?

Am not well familiar in Coredata storage. I want to save multiple data for a single person and retrieve the data of a selected person. Like wise i have store values in coredata table like below, ID Name Date Report …
Gopinath
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My inner-join isn't working

I made a inner-join between two tables, but it isn't working. It would help me a lot, if someone could help me as soon as possible. Thanks in advance It looks like this: List bondetals = session.createQuery("from Bondetal bd inner join…
alin
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Create the entities programmatically in core data model in iPhone during runtime

I want to create the entities in core data model during runtime programmatically in iPhone application . I don't know how to create custom entities during runtime . plz help me .
Attique
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Cannot properly decode html entities in perl

I am having an issue which I am unable to solve after spending the last 10 hours searching around the internet for an answer. I have some data in this…
Alexandre Thenorio
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