190+ PostgreSQL MCQ With Online Practice Test

PostgreSQL, often referred to as Postgres, is a powerful open-source relational database management system (RDBMS) known for its scalability, robustness, and extensibility. It offers advanced features like ACID compliance, support for complex data types, and support for both SQL and NoSQL data. PostgreSQL is highly regarded for its performance, security, and reliability, making it a popular choice for applications ranging from small startups to large enterprises. Its active developer community continuously enhances and maintains the software. PostgreSQL is an excellent choice for data storage, analysis, and management in various domains, including web applications, data warehousing, and geospatial applications.

Practice Test

31. What is the character data type for variable-length strings in PostgreSQL?


32. Which data type in PostgreSQL stores binary data in a variable-length format?

Answer: BYTEA

33. What is the purpose of the NUMERIC data type in PostgreSQL?

Answer: To store monetary values

34. Which data type is suitable for storing a date and time value in PostgreSQL?


35. What data type is used to store large binary data, such as images or audio files?

Answer: BLOB

36. In PostgreSQL, what data type is used for storing IP addresses and CIDR notation?

Answer: INET

37. Which data type is used to store a single character in PostgreSQL?

Answer: CHAR(1)

38. What is the data type for storing a boolean value in PostgreSQL?


39. Which data type is used to store a time of day in PostgreSQL?

Answer: TIME

40. What data type is used for storing an array of values in PostgreSQL?

Answer: ARRAY
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