题目

INFO20003_2025_SM2 MINI Practice Exam

匹配题

NoSQL A Determine whether the following statements are true or false: 1: Aggregate-oriented NoSQL databases are often easier to distribute than a relational database because they bundle relevant data together 2: Aggregate-oriented NoSQL databases are often faster to analyse stored data than a relational database because documents are kept in an unstructured ‘data lake’ which accelerates access speed 3: Aggregate-oriented NoSQL databases are usually more space-efficient for storing the same amount of data because they are ‘schema-on-read’, so the database does not need a schema. 4: A JSON/XML document enables multi-level hierarchy in its information, which allows a document-based database to mimic the structure of an object and thus 'solve' the object-relational-mismatch-problem

选项

A.False

B.True

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标准答案

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思路分析

We are evaluating four statements about aggregate-oriented NoSQL databases and their properties. Option 1: 'Aggregate-oriented NoSQL databases are often easier to distribute than a relational database because they bundle relevant data together.' This is accurate. Document- or key-value–style databases tend to store related data together within a single record or document, reducing the need for complex joins across distributed nodes. This data locality makes horizontal distribution and sharding more straightforward and often improves sca......Login to view full explanation

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类似问题

NoSQL: DB Types From your knowledge of NoSQL databases in the subject, pick the BEST choice for the following scenarios. (HINT: you need to know what type of database is referred to by the products/software below. To avoid confusion, all the products/software in one option are from the same No/SQL database type). 1: For a new competitor to Twitter/X: Storing the social network (follower/following) information of all users and allowing for fast determination of e.g., 'who is a follower of another follower of @TaylorSwift'? 2: For a news website: Storing key info such as title/author/date of a news article, along with the article text itself. Some articles might have different data types than others (e.g., photo journalism vs news report). 3: For a blockchain analysis tool: Storing connected crypto transactions, to allow fraud investigators to rapidly check for patterns of fraud: e.g., is an account transferring money to a recipient who then transfers it to the crypto exchange FTX.

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