MongoDB is a popular NoSQL database system renowned for its flexibility and scalability. It uses a document-oriented model, storing data in JSON-like BSON format, allowing for dynamic schemas and easy data manipulation. MongoDB's distributed architecture supports horizontal scaling, ensuring high availability and performance. It's widely utilized for applications requiring real-time data access and complex data structures. Its features include automatic sharding, replication, and support for geospatial data, making it a versatile choice for a broad range of industries, from e-commerce and social media to IoT and big data analytics.
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Practice Test
181. Which database type does MongoDB primarily represent?
A. NoSQL
B. SQL
C. NewSQL
D. Both NoSQL and SQL
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Answer: NoSQL
182. What is the primary data model used by MongoDB?
A. Relational model
B. Key-value model
C. Document model
D. Tabular model
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Answer: Document model
183. Which type of database is typically best suited for complex, structured data with fixed schemas?
A. SQL
B. NoSQL
C. Both SQL and NoSQL
D. Neither SQL nor NoSQL
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Answer: SQL
184. In MongoDB, how is data typically stored within collections?
A. In structured tables
B. As key-value pairs
C. In documents
D. In JSON format
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Answer: In documents
185. What is a primary use case for MongoDB in terms of data flexibility and scalability?
A. Handling large volumes of unstructured data
B. Complex queries
C. Data consistency
D. Small-scale applications
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Answer: Handling large volumes of unstructured data
186. In SQL databases, how are relationships between data tables typically managed?
A. Through joins
B. Using nested documents
C. With JSON format
D. By using key-value pairs
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Answer: Through joins
187. What does MongoDB's flexible schema mean in terms of data modeling?
A. It enforces a fixed schema
B. It supports varied structures
C. It only accepts JSON data
D. It allows for complex queries
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Answer: It supports varied structures
188. What is a significant advantage of SQL databases in terms of data consistency?
A. Strong ACID compliance
B. High scalability
C. Flexible data modeling
D. Automatic indexing
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Answer: Strong ACID compliance
189. What is a common query language used in MongoDB for data retrieval and manipulation?
A. SQL
B. NoSQL Query Language
C. QueryLang
D. BSONQL
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Answer: NoSQL Query Language
190. In MongoDB, how is data often queried and retrieved from collections?
A. Using SQL queries
B. By creating tables
C. Through REST APIs
D. Using a flexible query language
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Answer: Using a flexible query language