ORM

Object-relational mapping (ORM) is a programming technique that allows programmers to create objects that correspond to the data in a relational database. This makes it easier to work with data in a database, as programmers can use the objects to represent the data instead of having to write SQL queries directly. ORM frameworks take care of the plumbing involved in mapping objects to database tables, allowing developers to focus on writing business logic and less on data access code.

Using ORM

ORM frameworks can be used in a variety of programming languages, including Python, Java, and C#. Some of the most popular ORM frameworks for Python are SQLAlchemy, Django ORM, and Peewee. For Java, there is Hibernate, JPA, and iBatis. And for C#, there is Entity Framework, NHibernate, and LLBLGen Pro.

Once an ORM framework is integrated into an application, developers can use it to map objects to database tables. This is done by creating a class that inherits from a base class provided by the ORM framework. The class should have properties that correspond to the columns in the database table. Once the class is created, the ORM framework will take care of the mapping between the objects and the database table.

Benefits of ORM

There are many benefits to using ORM frameworks. Some of the benefits include: