Certificate in Business Data Analytics (CBDA) — Question 38

An analyst at a supermarket chain has been asked to extract data from multiple data sources to complete a study on customer spending habits. The analyst is going to query data from various databases.
Which statement is true about database querying?

Answer options

• A. Querying can be used to create predictive data models
• B. Irrespective of the querying language used, data results retrieved are always in a tabular format
• C. A querying language is independent of the type of database being used
• D. Querying is a structured way of searching, manipulating and managing data

Correct answer: D

Explanation

The correct answer is D because querying is indeed a structured method that allows users to search, manipulate, and manage data effectively. Option A is incorrect since querying is not primarily for creating predictive models. Option B is false because the format of the data results can vary based on the querying language and database type. Option C is misleading as different databases may use different querying languages and structures.