Q11easy
What is the main reason an organization would choose Cloud Data Warehousing (e.g., Snowflake, BigQuery) over a traditional On-Premise Data Warehouse?
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24 Questions Total
NoSQL & Modern Databases MCQs
Topic-wise practice questions for Database Management Systems. Test your knowledge, check solutions on demand, and pace your preparation.
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Practice in Timed ModeQ12easy
What is the primary architectural difference between a Data Warehouse and a Data Mart?
Q13medium
A developer is using Redis to store session data. Which of the following commands demonstrates the "Key-Value" nature of this database? redis-cli
Q14medium
(Code/Logic Tracing) In a data mining context, what does Confidence represent in an association rule {A} → {B}?
Q15hard
A startup is building a real-time analytics dashboard for a global IoT network. Sensors send millions of small updates every second. The schema changes ◦ ◦ ◦ ◦ ◦ ◦ frequently as new sensor types are added. Which database type is most appropriate for this high-velocity, flexible-schema workload?
Q16easy
In OLAP operations, what does "Slicing" the data cube involve?
Q17medium
A modern AI company needs to build a search engine that finds "Images similar to this one." They use a Vector Database. How does this search work technically?
Q18medium
Analyze the following operation from a Document-oriented database. What is the primary difference between this and a traditional SQL INSERT?
Q19medium
An e-commerce company wants to predict whether a customer will "Churn" (stop using the service) based on their last 6 months of activity. Which data mining task is required?
Q20medium
A supermarket analyzes millions of receipts and discovers that people who buy "Diapers" on Friday nights are also 70% likely to buy "Beer". Which data mining technique was used?