In contrast to the query languages used to interact with a relational database,interaction with an object-oriented database takes places via methods that are called by sending a message to an object.

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In object-oriented databases, interaction with data is indeed performed through methods that are called by sending messages to objects. This is different from relational databases, where data is typically queried using SQL or other query languages.

In Contrast to the Query Languages Used to Interact with a Relational