Only in those cases where you can't follow the standard convention. Thus, explicit configuration would be needed You configure your applications in the very same way most of the time then this Rails, you'll need to write very little configuration (in some cases noĬonfiguration at all) when creating Active Record models. However, if you follow the conventions adopted by This is particularly trueįor ORM frameworks in general. May be necessary to write a lot of configuration code. When writing applications using other programming languages or frameworks, it Perform database operations in an object-oriented fashion.Ģ Convention over Configuration in Active Record.Validate models before they get persisted to the database.Represent inheritance hierarchies through related models.Represent associations between these models.1.3 Active Record as an ORM FrameworkĪctive Record gives us several mechanisms, the most important being the ability Please refer to this tutorial (or this one) or study them by other means if you would like to learn more. Retrieved from a database without writing SQL statements directly and with lessīasic knowledge of relational database management systems (RDBMS) and structured query language (SQL) is helpful in order to fully understand Active Record. Relationships of the objects in an application can be easily stored and Object Relational Mapping, commonly referred to as its abbreviation ORM, isĪ technique that connects the rich objects of an application to tables inĪ relational database management system.
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Object on how to write to and read from the database. Active Record takes the opinion that ensuringĭata access logic as part of the object will educate users of that InĪctive Record, objects carry both persistent data and behavior which In his book Patterns of Enterprise Application Architecture. 1.1 The Active Record PatternĪctive Record was described by Martin Fowler
Implementation of the Active Record pattern which itself is a description of an Objects whose data requires persistent storage to a database. Active Record facilitates the creation and use of business
Model - which is the layer of the system responsible for representing businessĭata and logic.
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