![]() ![]() ![]() Presents a high level and abstracted pattern of usage, which itself is anĮxample of applied usage of the Expression Language. SQL Expression Language Tutorial (1.x API), presents a system of representing the primitiveĬonstructs of the relational database directly without opinion, the ORM Whereas the SQL Expression Language, introduced in The ORM is in contrast to the SQLAlchemy Expression Language, upon which the System that transparently synchronizes all changes in state between objectsĪnd their related rows, called a unit of work, as well as a systemįor expressing database queries in terms of the user defined classes and theirĭefined relationships between each other. User-defined Python classes with database tables, and instances of thoseĬlasses (objects) with rows in their corresponding tables. The SQLAlchemy Object Relational Mapper presents a method of associating ORM Query is internally unified with select, update, delete 2.0 style execution available ![]()
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