Podcast
Questions and Answers
What is the main feature provided by RDBMS?
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?
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?
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?
According to the CAP theorem, what does 'Consistency' refer to?
Which company is mentioned as using NoSQL in the given text?
Which company is mentioned as using NoSQL in the given text?
What is the meaning of partition-tolerance in the context of a system?
What is the meaning of partition-tolerance in the context of a system?
Which type of consistency is associated with the ACID properties in large systems?
Which type of consistency is associated with the ACID properties in large systems?
Which company or companies build big applications on CAP and BASE according to the text?
Which company or companies build big applications on CAP and BASE according to the text?
What is the primary focus of Key-Value stores based on the text?
What is the primary focus of Key-Value stores based on the text?
Which type of database is based on Google’s BigTable paper according to the text?
Which type of database is based on Google’s BigTable paper according to the text?
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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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