Normalized Data Model in Employee Details
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Questions and Answers

When designing a schema in MongoDB, what is the recommended approach for combining objects?

  • Make extensive use of joins
  • Duplicate the data across multiple documents
  • Separate objects even if they are used together
  • Combine all objects into a single document (correct)

    • In MongoDB, what should be considered when duplicating data in the schema?

  • Duplicating data is not supported in MongoDB
  • Duplicate data liberally to reduce compute time
  • Consider disk space as cheap compared to compute time (correct)
  • Avoid duplication at all costs to save on disk space

    • What is the advantage of doing joins while writing in MongoDB?

  • It simplifies the schema design
  • It speeds up data retrieval during reads (correct)
  • It reduces storage requirements
  • It eliminates the need for a dynamic schema

    • How should the schema be optimized in MongoDB according to the text?

    <p>Optimize for most frequent use cases</p> Signup and view all the answers

    What does the text suggest about disk space and compute time in MongoDB schema design?

    <p>Disk space is more important than compute time</p> Signup and view all the answers

    In MongoDB schema design, what is the best practice regarding complex aggregation?

    <p>Do complex aggregation within the schema</p> Signup and view all the answers

    What is a key feature of the MongoDB schema design mentioned in the text?

    <p>Dynamic schema with nested data structures</p> Signup and view all the answers

    How does the RDBMS schema design differ from the MongoDB schema design?

    <p>RDBMS schema requires joining multiple tables while MongoDB shows data from one collection</p> Signup and view all the answers

    Which database system mentioned is specifically designed to handle large amounts of data across multiple servers?

    <p>Cassandra</p> Signup and view all the answers

    What benefit does Apache Cassandra provide in terms of availability?

    <p>High availability with no single point of failure</p> Signup and view all the answers

    In the MongoDB schema design, what structure is used to represent the tags associated with each post?

    <p>Array</p> Signup and view all the answers

    What type of database is Apache Cassandra categorized as?

    <p>NoSQL Database</p> Signup and view all the answers

    What is the advantage of MongoDB over RDBMS in terms of schema design?

    <p>MongoDB allows for a dynamic schema, where one collection can hold different documents with varying structures.</p> Signup and view all the answers

    How does MongoDB handle the structure of a single object in a document?

    <p>The structure of a single object is clear in MongoDB documents.</p> Signup and view all the answers

    What type of queries can be performed in MongoDB due to its dynamic schema?

    <p>Dynamic queries on documents using a powerful query language.</p> Signup and view all the answers

    How does MongoDB differ from RDBMS regarding the number of tables and relationships?

    <p>MongoDB has no concept of table relationships, unlike RDBMS.</p> Signup and view all the answers

    Which feature contributes to the 'deep query-ability' advantage of MongoDB?

    <p>Dynamic queries on documents using a powerful query language.</p> Signup and view all the answers

    How does MongoDB's ease of scale-out differ from traditional databases?

    <p>MongoDB provides easy scalability through its architecture.</p> Signup and view all the answers

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