DMLI case studies
DMLI · Put your knowledge to work in context.
DMLI is a data management credential aimed at practitioners who already work with data day to day - analysts, data stewards, engineers moving toward governance roles, and managers who own data products - and who want a structured way to demonstrate breadth across the discipline. The exam is multiple choice and is organized around six domains: data management fundamentals, governance and compliance, quality and integration, modeling and architecture, analytics and business intelligence, and leadership, ethics, and professional practice. The DMLI case studies are 5 cases and about 3,740 words.
1The Duplicate Customer Problem Nobody Owns
A regional retailer merged its online store and three brick-and-mortar POS systems two years ago. Customer records now live in four systems: the e-commerce platform (1.2M records), a loyalty app (900K), POS (600K), and a legacy CRM (400K) that is still used by the call center.
708 words, about 4 min2The Dashboard That Everyone Trusts and Nobody Checks
You lead a 12-person analytics team at a healthcare insurer. A weekly "provider performance" dashboard has been in production for 18 months, used by the network management team to decide contract renewals.
745 words, about 4 min3The Data Lake With No Shore
A mid-size logistics company built a data lake three years ago on the promise of "democratizing data." Today it holds about 4,000 tables across 40 schemas, ingested from 60 source systems by a team of four engineers. There is no data catalog.
749 words, about 4 min4Consent, Retention, and the Marketing Copy
You are the data lead at a European e-commerce company. A marketing manager wants to use a purchased list of 200,000 email addresses to launch a spring promotion.
767 words, about 4 min5The Model That Passed Validation and Should Not Ship
You lead a data science team at a consumer lender. Your team built a credit-scoring model to replace a rules-based system.
771 words, about 4 min