Object-relational mapping (ORM) is a technique for mapping between object-oriented systems and relational databases.

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What would you think about a new Java persistence tool, that's not really an ORM? [closed]

Persistence in Java Over the past years, I have gathered experience in the field of persistence abstraction in Java, using concepts such as EJB 2.0, Hibernate, JPA and home-grown ones. They seemed to ...
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2answers
475 views

ORM domain design pitfalls

Are there any patterns which seem sensible when designing an object oriented domain, but do not translate nicely onto a relational database schema? If so, are there standard patterns that can be used ...
6
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3answers
4k views

What is the best PHP ORM library? [closed]

I want to build a PHP web application, but always faces the problem that I need to connect to database and deal with related objects. So I tried codeigniter and it uses a special way to connect to ...
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7answers
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Is Entity Framework ready for production?

I'm looking into Entity Framework for a new project that I'm going to be taking on and as part of my research into it I'm asking some industry professionals if it's stable and ready for 'real world' ...
2
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3answers
541 views

What are the non-technical reasons that make Object-Relational Mapping tools (ORMs) so difficult to write?

I know the technical pitfalls of writing an ORM are pretty well-known nowadays, but what are some non-technical factors (e.g., Scope) that make it difficult to writing a good ORM? EDIT: I have ...
26
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13answers
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What are the criteria for evaluating an ORM for.NET?

I'm looking at evaluating ORMs. I've used SubSonic, Linq-to-SQL and Entity Framework. I've got a team of developers ranging from juniors to seniors. What are the criterias for evaluating an ORM ...
3
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1answer
195 views

CMP Entity Beans as a “naive” ORM solution

I was browsing through this talk about "Historically Bad Ideas" over the history of Computer Science, and found an interesting presentation about the rise & fall of the Java Enterprise ...
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14answers
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What are the benefits of using database abstraction by ORM? [closed]

I'm starting to use the ORM recommended by the framework I choose, and though I like the idea of the added layer of abstraction the ORM provides, I'm starting to realize what this really means. It ...