Worked technical guide
Deterministic deduplication before a BigQuery MERGE
Explore →SARAVANA KUMAR · TECHNICAL KNOWLEDGE
Data Engineering trainer in Chennai & online
Build pipelines that can be explained, validated, monitored and recovered after failure. Learn with Saravana Kumar, technical trainer since 2014. Online across Tamil Nadu; discuss Chennai sessions by enquiry.
A learning path with practical decisions
SQL foundations and basic Python help. For advanced mentoring, bring a sanitized architecture or reproducible sample.
- SQL, Python and data-model grain
- Batch loading, ETL/ELT and cloud storage
- CDC, incremental loads and deterministic deduplication
- Orchestration, quality checks and recovery
Practice project to discuss
A repeatable order ingestion pipeline with source-key checks, rejected-record handling and reconciliation.
This is a proposed learning exercise, not a claim about a client project or student result.
Explore before you enquire
Problems & solutions
Use symptoms, diagnosis steps and a bounded fix.
Explore →Fresher interview preparation
20 concise answers with illustrative scenarios.
Explore →Experienced interview preparation
20 answers focused on tradeoffs, recovery and design.
Explore →Experience and delivery
My technical training journey began in 2014 alongside my professional IT career. My professional background includes 15 years across HCL and Wipro. Subjects taught have evolved over time.
Online mentoring is available to learners across Tamil Nadu. Chennai session arrangements, availability, venue, syllabus, duration and fees are confirmed during enquiry. No permanent training centre address is listed.
View credentials and their verification status · Professional background · Published teaching samples
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