From the course: Advanced SQL for Application Development

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Overview of object-relational mapping

Overview of object-relational mapping

From the course: Advanced SQL for Application Development

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Overview of object-relational mapping

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- [Narrator] Now in this section of the course, we're going to take a look at object relational mapping, and we'll start with a brief overview. Now when we talk about relational databases and object-oriented models, we're really talking about two different ways or two different models for representing data, specifically entities. Now, relational databases, they model entities using an ordered set of attributes. Now, we typically call those rows and the formal name is tuples, but in general it's safe to think of 'em as just like rows that are organized into collections and we call these collections tables. Now, object-oriented models, on the other hand, are organized around two concepts called class and instance. Now, a class or classes describe the structure of an object, and an instance, or instances, those are actual objects that store data about a particular entity, so these are some key terms you want to keep in…

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