A staple in Magento 2 frontend interview questions, be prepared to answer this one.   Entity-Attribute-Value is referred to as EAV. To increase the functionality of the Magento application, EAV properties are used. The majority of the time, objects with EAV attributes save their values in MySQL tables. Following is a description of each component of EAV:  Entity: It stands for the items, orders, groups of items, and clients, among other things. In databases, there will be a record for each entity.  Attribute: It offers data on entities, which is an attribute. Examples of qualities that a product might have are its name, price, stock level, etc.  Value: A value is what an attribute is worth.