According to different data storage methods, databases are mainly divided into relational databases and non-relational databases. Which of the following statements about the main advantages of…

Question

Options

• AStable performance, the query performance of relational database is better than that of non-
• BEasy to use, the general sq1 statement makes it very convenient to operate relational databases
• CEasy to understand, the structure of the two-dimensional table is very close to the real world, two-
• DEasy to maintain, the ACID property of the database greatly reduces the probability of data

• A
  84% (47)
• B
  4% (2)
• C
  9% (5)
• D
  4% (2)

Explanation

Option A is the wrong statement because relational databases do not universally outperform non-relational databases - in fact, NoSQL databases are often significantly faster for large-scale, high-volume, or unstructured data workloads, which is a key reason they were developed in the first place. Options B, C, and D are all genuine, well-established advantages of relational databases: SQL is a standardized and widely understood query language (B), the two-dimensional table model maps naturally to real-world entities and relationships (C), and ACID compliance (Atomicity, Consistency, Isolation, Durability) ensures data integrity and reduces corruption or anomaly risks (D). Performance is the one area where relational databases are frequently at a disadvantage compared to NoSQL solutions, not an advantage.

Memory tip: Remember that relational databases win on structure, consistency, and usability - but when it comes to raw speed at scale, NoSQL often takes the lead, making performance the odd one out among the listed advantages.

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