
96% Faster Data Reconciliation - Zero-Guesswork Validation for one of the Top 5 Canadian Bank's Global Derivatives Business
At a glance -
the essentials
One of the Top 5 Canadian Banks
- The bank's Global Derivatives/FICC business generated a massive volume of trade data every day from different source trading systems, all loaded into a central database. Validating each record by hand made QA effort during SIT and UAT significantly high, and the exercise only grew harder as data arrived in multiple formats - Excel, JSON, and delimited DAT files - changed in real time, and grew too large to reconcile manually with any confidence. The bank needed a way to compare source and target data completely, not on a sample, and to see clearly where and why records differed.
- Use the DQV product to compare two DAT files, each approximately 1.5 GB in size, containing 800K records with 151 fields per record, end-to-end in 153 seconds, with no manual extraction or scripting required.
- Implement built-in aggregation across multiple key fields (10+) and calculate/derived-field expressions evaluated inline during comparison, completing the comparison in 243 seconds even with the additional processing.
- Validate wide Excel extracts at both ends of the spectrum -174K records × 72 columns in 151 seconds and 27K records × 216 columns in 51 seconds-covering both high-volume and high-column-count files
- Parse and reconciled nested JSON documents (3.2 MB, 68 fields, 6.5K records) in as little as 11 seconds.
- Generate detailed Excel reports for every comparison - DAT, Excel, or JSON - including mismatch statistics and a full record-level mismatch breakdown, eliminating the need for separate tooling for different formats.
- Add custom computed fields to the comparison results to calculate the deviation percentage and identify whether the deviation exceeded a defined alert threshold.
- Execute comparisons across the entire data set for every run, regardless of file type or size, with no sampling.
- Reduced validation time from 5-6 hours to 15 minutes, enabling faster releases to production
- Achieved 100% data-set coverage (no sampling) for validation.
- Enabled QA teams to independently run comparisons and validate results using different aggregations and key columns.
- Provided multiple report views, including summarized and detailed views, giving clear visibility into differences and mismatches.
- Added custom comparison result fields to flag alert conditions, enabling QA teams to identify and address differences more quickly.
- Clearly highlighted mismatches between Source (Prod) and Target (next release) files.
From manual spot-checks to automated 100% validation in 15 minutes.
Kumaran partnered with the Global Derivatives/FICC team at one of the top 5 Canadian banks to replace manual, sample-based QA checks with an automated Data Quality Validation (DQV) engine - cutting validation time from 5–6 hours to 15 minutes while covering 100% of the data set. The engagement spans DAT, Excel, and JSON trade data feeds generated daily by multiple source trading systems, and gives QA teams detailed, ready-to-use mismatch reports instead of hand-built comparisons. The outcome is a faster, more complete release cycle with far less manual QA effort.
The Background
The bank's Global Derivatives/FICC trade systems generate a massive amount of data every day, loaded into a database for downstream use. Comparing source and target data by hand across Excel, JSON, and delimited DAT files, often changing in real time - was slow, error-prone, and rarely covered more than a sample of the full data set. With QA effort during SIT and UAT already high, an automated, complete comparison was the only way to keep pace with release schedules.
Want to know how we achieved these results?
Contact us today to learn more about our Data Quality Validation (DQV) approach and the success story behind this engagement with the Global Derivatives/FICC team at one of the top 5 Canadian banks.
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