You are presented with the following data structure:

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{
            _id: <User1>,
            username: “JohnDoe”,
            firstname: “John”,
            lastname: “Doe”,
            age: 20,
            groups: [“ polotics”, “news” ]
}

What type of database allows this sort of structure to be stored and retrieved using a non-structured querying language?

  • a.MongoDB
  • b.RDBMS
  • c.OLAP
  • d.Oracle

The correct answer is: MongoDB

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