D467 Exploring Data - Set 5 - Part 3

Correct Answer: The process of removing or correcting inaccurate, incomplete, or irrelevant data

Data cleaning involves identifying and rectifying errors, inconsistencies, and inaccuracies in data to ensure its quality and accuracy.

Correct Answer: Sorts the result set in ascending or descending order based on specified columns

The ORDER BY clause in SQL is used to sort the result set in either ascending or descending order based on one or more columns.

Correct Answer: Calculates the mean of a range of values

The AVERAGE function in a spreadsheet calculates the mean of a selected range of values, providing a central tendency measure.

Correct Answer: To return only unique values from a query result

The DISTINCT clause in SQL is used to return only distinct (unique) values, eliminating any duplicates from the result set.

Correct Answer: All data-processing activities and algorithms must be explainable and understood by individuals who provide the data

Transaction transparency ensures that individuals are fully informed about how their data is processed and that they can understand the algorithms and decisions based on their data.

Correct Answer: A tool for checking the accuracy and quality of data before importing it

Data validation is the process of ensuring that data is accurate, complete, and appropriate for its intended use before it is imported or processed.

Correct Answer: A way of describing how data is organized in a database

A schema defines the structure of a database, including the organization of tables, fields, and relationships between them.

Correct Answer: Filters records based on specified conditions

The WHERE clause in SQL filters records that meet specific conditions, ensuring that only relevant records are returned in the query.

Correct Answer: Data that is organized in a predefined format, such as rows and columns

Structured data is highly organized and formatted in a way that makes it easy to store and analyze, typically arranged in tables with rows and columns.

Correct Answer: The ability to integrate data from multiple sources

Data interoperability refers to the ability to integrate and use data from different sources, allowing organizations to combine information for analysis.