CDDP case studies
CDDP · Put your knowledge to work in context.
The Certified Digital Data Professional (CDDP) is an independent, vendor-neutral credential for people who work with data across its lifecycle: governing it, modelling it, storing and integrating it, keeping it clean, analysing it, presenting it, securing it, and running it on modern platforms. Candidates typically come from data analyst, data engineer, data steward, BI developer, analytics consultant, and data governance roles, or are moving into those roles from adjacent IT or business positions. The CDDP case studies are 5 cases and about 3,637 words.
1Erasure Request, Legal Hold, and an Unsanctioned Ad Feed
A European specialty retailer keeps a 4.2 million row customer profile table in its EU warehouse and replicates it nightly to a US analytics environment for churn scoring. The 2021 consent notice covered 'marketing analytics'; the churn scores now flow to a third-party ad platform keyed on hashed email addresses.
737 words, about 4 min2CDC Replay Corruption and the 23:00 Revenue Close
An online marketplace streams order events from a PostgreSQL OLTP database into a cloud warehouse using Debezium, Kafka and a MERGE-based loader. Peak volume is 1,200 events per second.
731 words, about 4 min3Match Thresholds and the USD 340,000 Credit Note
A distributor's customer master holds 310,000 account records sourced from Salesforce, an on-premise ERP and a legacy billing system. The first matching pass produced 22,000 candidate pairs.
724 words, about 4 min4Day Nine of a Checkout Experiment
A subscription business is testing a redesigned checkout. The pre-test power calculation called for 148,000 users per arm to detect a 5% relative lift in conversion from a 3.2% baseline, with 80% power at alpha 0.05 two-sided.
714 words, about 4 min5Releasing 2.3 Million Claims Rows to Academic Researchers
A health insurer plans to release 2.3 million claims rows to 40 academic researchers as a flat file. Direct identifiers are removed, but the file keeps 5-digit ZIP, full date of birth, admission and discharge dates, sex, and a stable member pseudonym so that researchers can link a member's records over time.
731 words, about 4 min