Object oriented data modeling is a specialized task.

Object modeling languages are  based on a standardized set of symbols and ways of arranging them to model part of an object oriented software design or system design.

An important difference between Object Oriented data and relational data is that the attributes of an object cascade.

For example, If in the original design, a customer has a few attributes like name, address, payment history etc all new customers will have those attributes by definition. If it later becomes necessary to include additional attributes, like say ‘product type preference’ it is only necessary to add that attribute to the root object. All customers, including the old ones will then have the attribute ‘product type preference’

Conceptually it is easier to design an Object Oriented database, but it is more difficult to impliment

And a design vernacular has been developed for the purpose




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