Describe core data concepts
Practise only this domain. 53 questions with explanations, 20 at a time.
Start describe core data conceptsSample questions
- A media company is cataloguing its data assets. Which asset below counts as unstructured data?Easy
- Which description correctly contrasts schema-on-write with schema-on-read?Medium
- A travel marketplace stores hotel listings whose attributes differ by property type and change often as partners add new fields. The catalog must be readable with low latency on several continents and stay available if one region fails. Which data type and store combination fits?Hard
- A payments processor must guarantee that refunds and charges are recorded exactly once, support auditors who run cross-customer analysis over several years, and process card authorizations in real time. Which architecture best meets these needs?Hard
- Which role is accountable for keeping a company's production SQL Server instances available, including patching, access security, backup and restore testing, and performance tuning?Easy
- A payroll export tool saves employee records as a plain-text file in which each line is one record and commas divide the fields. Which file format is this?Easy