RDBMS and NoSQL Quiz

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Questions and Answers

What is the main feature provided by RDBMS?

  • Horizontal Scalability
  • Relational model with schemas (correct)
  • Non-relational data storage systems
  • Fast key-value access

Why does NoSQL complement RDBMS according to the given text?

  • It doesn’t use SQL as a querying language
  • It offers horizontal scalability
  • It relaxes one or more of the ACID (CAP theorem) (correct)
  • It provides non-relational data storage systems

What are the key features of NoSQL, as mentioned in the text?

  • Non-relational, predictable response time, and strong consistency
  • Strict schema requirement, data replication to multiple nodes, and complex queries
  • Flexible schemas, semi-structured data, and geographic distribution (correct)
  • Relational model with schemas, powerful query language, and ACID transactions

According to the CAP theorem, what does 'Consistency' refer to?

<p>All copies have the same value (D)</p> Signup and view all the answers

Which company is mentioned as using NoSQL in the given text?

<p>Google (BigTable) (A)</p> Signup and view all the answers

What is the meaning of partition-tolerance in the context of a system?

<p>The system continues to operate even with data loss or system failure (D)</p> Signup and view all the answers

Which type of consistency is associated with the ACID properties in large systems?

<p>Strong Consistency (B)</p> Signup and view all the answers

Which company or companies build big applications on CAP and BASE according to the text?

<p>Google, Yahoo, Facebook, Amazon, eBay (B)</p> Signup and view all the answers

What is the primary focus of Key-Value stores based on the text?

<p>Scalability to huge amounts of data (D)</p> Signup and view all the answers

Which type of database is based on Google’s BigTable paper according to the text?

<p>Column stores (A)</p> Signup and view all the answers

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Study Notes

RDBMS and NoSQL

  • RDBMS provides a structured data storage mechanism with strict schema enforcement.

NoSQL Complementing RDBMS

  • NoSQL complements RDBMS by providing a flexible and scalable data storage solution for handling large amounts of unstructured or semi-structured data.

Key Features of NoSQL

  • NoSQL databases provide a flexible schema, which allows for easy adaptation to changing data structures.
  • NoSQL databases offer high scalability and performance, making them suitable for big data and real-time web applications.
  • NoSQL databases are designed to handle large amounts of unstructured or semi-structured data.

CAP Theorem

  • According to the CAP theorem, 'Consistency' refers to every read operation will see the most recent write or an error.

Companies Using NoSQL

  • Amazon uses NoSQL for its large-scale e-commerce platform.

Partition Tolerance

  • Partition-tolerance in a system refers to the ability to continue functioning even when network partitions or network failures occur.

Consistency and ACID

  • Strong consistency is associated with the ACID (Atomicity, Consistency, Isolation, Durability) properties in large systems.

Companies Building Big Applications

  • Both Amazon and Yahoo build big applications on CAP and BASE (Basically Available, Soft-state, Eventual Consistency).

Key-Value Stores

  • The primary focus of Key-Value stores is to provide fast and efficient data retrieval using a unique key.

Database Based on Google’s BigTable

  • HBase is a type of database based on Google’s BigTable paper.

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