Controversy
Object relational mapping technologies have emerged in many application development shops as somewhat divisive.
There are a variety of difficulties that arise when considering how to match an object system to a relational database. These difficulties are referred to as the object-relational impedance mismatch.
An alternative to implementing ORM is use of the native procedural languages provided with every major database on the market. These can be called from the client using SQL statements.
Read more about this topic: Object-relational Mapping
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