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Examples of ORMs are nHibernate, Entity Framework, Dapper and more MongoDB is an example of a document database - you would use an ODM to translate between your objects in code and the document representation of the data (if needed) Mandango is an example of an ODM for MongoDB Indeed that's the whole purpose of ORMs: for very simple projects with no bottlenecks anywhere When you get to the point where "You have to check queries to see whether they are the converted to the most efficient form or else tweak your ORM query as needed", it defeats the whole purpose of using ORM in the first place, because the purpose of using ORM is to avoid exactly that Mar 9, 2016 · ORMs and code generators are kind of on one side of the field, and stored procedures are on another Typically, it's easier to use ORMs and code generators in greenfield projects, because you can tailor your database schema to match the domain model you create It's much more difficult to use them with legacy projects, because once software is written with a "data-first" mindset, it's Someone suggested I use an ORM for a project that I'm designing, but I'm having trouble finding information on what it is or how it works Can anyone give me a brief explanation of what an ORM is The biggest gains of ORMs are things like units of work, object mapping, change tracking, lazy loading, migrations, and relationships It is a wonderful thing to be able to write user profile givenName and not care about what structure was used to store the data for it The short answer is yes, there are really good reasons As a matter of fact there are cases where you just cannot use an ORM Case in point, I work for a large enterprise financial institution and we have to follow a lot of security guidelines To meet the rules and regulations that are put upon us, the only way to pass audits is to keep data access within stored procedures Now some may say Jan 30, 2009 · Though I have used ORMs in python like SQLAlchemy, I didn't stick with them for long Usually it was either the documentation or complexity (from my point of view) holding me back I see it like this: use an ORM for portability, plain SQL if it's just going to be using one type of database Jul 6, 2010 · There are some very nice, very easy to use commercial ORMs I'm currently using Lightspeed in a C# 4 project, and extremely happy with it for this specific scenario The "N+1 selects problem" is generally stated as a problem in Object-Relational mapping (ORM) discussions, and I understand that it has something to do with having to make a lot of database queries Sep 22, 2010 · I'm not a database admin or architect, so I have to ask those who do it 24 7 How established is the concept of an ORM (object relational mapping) in the world of database administration and archit
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