Denodo Platform 9 Certified Developer Professional case studies
Denodo Platform 9 Certified Developer Professional · Put your knowledge to work in context.
The Denodo Platform 9 Certified Developer Professional is a vendor credential aimed at developers and data engineers who build and operate solutions on the Denodo data virtualization platform. It validates that you can work across the full development surface of the product rather than only one module: connecting to and modeling source systems, building base and derived views, tuning queries, applying security and masking, publishing data services, configuring caching and acceleration, scheduling data movement jobs, promoting artifacts through the development lifecycle, and understanding core architecture and administration tasks. The Denodo Platform 9 Certified Developer Professional case studies are 5 cases and about 5,074 words.
1Connection pool sizing on a two-node VDP cluster
A media company runs three Denodo servers (two Virtual DataPort nodes plus a Scheduler node) against one Oracle 19c warehouse licensed for 150 concurrent sessions. Each VDP node defines the warehouse data source with initial connections = 20 and maximum connections = 200; pooling is enabled, but no idle timeout and no validation query are configured.
976 words, about 5 min2Cross-source join spilling 22 GB of hash table
A retail group exposes a sales fact base view on an Impala data source: 480 million rows, partitioned by sales date , with no statistics ever collected. A 6,000-row store hierarchy dimension lives on Oracle.
1,022 words, about 5 min3Row-level and masking policy bypass through a shared service account
A regional bank exposes a customer 360 view (customer id, full name, national id, email, region, risk score, balance) as a REST data service used by three channel applications, and directly over JDBC by internal analysts. Requirements: support agents see national id masked to the last four characters and only customers in their own region; risk analysts see the full national id but only region = 'EMEA' ; a data-science service account needs all regions with national id irreversibly hashed.
1,034 words, about 5 min4Full cache with hourly expiration causing stampedes
An insurer's claims pipeline view joins three sources, including a REST lookup for adjusters, and has a median runtime of 85 seconds. Between 08:00 and 11:00, 350 underwriters open the same dashboard, which sends 12 distinct combinations of (reporting month, region).
988 words, about 5 min5Incremental snapshot with deletes, trigger bypass and a reset watermark
An airline replicates a bookings view into a Snowflake landing table for a finance mart. The source is PostgreSQL with 260 million rows and 24/7 writes.
1,054 words, about 5 min