Business Intelligence Background Questions
A summary of business intelligence experience including the BI platforms and tools used, types of dashboards and reports built, data volumes and sources, analytical methods, stakeholder consumption patterns, and measurable business outcomes. Candidates should explain how BI efforts influenced decisions, examples of ETL or modeling work, and any leadership or ownership of BI initiatives.
HardTechnical
0 practiced
Discuss data security and privacy considerations for BI systems. Cover encryption at rest and in transit, role-based access control, column-level masking and tokenization for PII, audit logging, and regulatory compliance such as GDPR or CCPA. Suggest design patterns that balance analyst productivity and privacy.
HardTechnical
0 practiced
Given a set of SQL transformation files, implement (pseudocode or Python) a simple data lineage builder that parses each SQL, extracts input and output table references, constructs a directed graph of table dependencies, performs cycle detection, and outputs a topological order for table builds.
HardTechnical
0 practiced
Case study: After launching a new onboarding flow, BI reports show a 10% uplift in retention for one week, then metrics revert to baseline. Design an analysis plan to determine if the uplift was causal: what data checks, segmentation, statistical tests, and confounders would you investigate?
HardTechnical
0 practiced
When designing dashboards for executives versus analysts, what visualization patterns, interactivity levels, and summary metrics would you recommend? Discuss the trade-offs between simplicity and drillability, and how you would measure dashboard effectiveness after deployment.
MediumTechnical
0 practiced
A BI query joins a 100 billion row fact table to several dimensions and takes minutes. List concrete optimizations you would apply to bring latency down to a few seconds: consider partitioning, clustering, indexes, materialized views, pre-aggregation, query rewrite, and caching. Explain trade-offs for each.
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