Databricks Data Analyst case studies
Databricks Data Analyst · Put your knowledge to work in context.
The Databricks Certified Data Analyst Associate is an entry-level, proctored certification that validates a candidate's ability to use the Databricks Data + AI Platform and Databricks SQL to complete introductory data analysis work. According to the official exam page, it assesses proficiency across the platform itself, managing data with Unity Catalog, importing data through methods such as the UI, S3 ingestion, Delta Sharing, API-driven intake, Auto Loader, and Marketplace, and executing and optimizing queries - including creating views, performing aggregations, joining, filtering, and sorting tables, and analyzing queries with auditing, history, logs, and Liquid clustering. The Databricks Data Analyst case studies are 5 cases and about 4,449 words.
1The Dashboard That Melts at 9 A.M.
A finance team publishes an AI/BI dashboard with nine tiles. Every tile reads gold.fct gl entry (~2.4 billion rows) filtered to the trailing 13 months; in isolation each tile scans roughly 180 GB and takes 40-70 seconds.
953 words, about 5 min2The Regional Manager Who Sees Too Much
prod.sales.orders holds 640 million rows across six regions and includes customer email, customer phone, and national id. Two groups need access.
894 words, about 4 min3Genie Is Confidently Wrong and Two Analysts Have Quit On It
A Genie space was launched over a silver schema containing 41 tables. Business users ask questions like "What were APAC card revenue bookings last quarter versus plan?" Observed failures: Genie answers from silver.txn raw instead of gold.revenue monthly, joins dim merchant on the wrong key, mixes USD and local-currency columns, and treats booking date and revenue date as interchangeable.
890 words, about 4 min41.8 Billion Events and 900,000 Small Files
Clickstream events land in silver.events: 1.8 billion append-only rows with event ts, merchant id, country, event type, and 40 further attributes. The table is currently partitioned by event date and has 4,200 partitions with more than 900,000 files.
829 words, about 4 min5Three Sources, Six People, No Duplicates Allowed
A platform team of six is choosing ingestion for three sources. (a) A partner drops roughly 1,200 gzipped CSV files per day into cloud storage; batches sometimes arrive hours late, a corrected copy of an already-processed file is occasionally re-uploaded, and last month two new nullable columns appeared without notice.
883 words, about 4 min