Jnachi Certified Relational Database Engineering & Advanced SQL Specialist
Validates comprehensive knowledge of relational database management systems (RDBMS) and production SQL engineering. Assesses schema design and normalization principles, transaction isolation levels (ACID), multi-table JOINs (INNER, LEFT, FULL, CROSS), Common Table Expressions (WITH clauses), Window functions (ROW_NUMBER, RANK, PARTITION BY), B-Tree indexing strategies, EXPLAIN query plan analysis, and database security.
Jnachi Certified Relational Database Engineering & Advanced SQL Specialist
Validates comprehensive knowledge of relational schema modeling, normalization, ACID transactions, complex joins, window functions, and query plan optimization.
Exam Competency Matrix & Domain Breakdown
Select any domain below to inspect tested skills, real-world scenarios, and preparation materials.
Relational Modeling, Normalization & ACID Properties
1NF–BCNF normalization, primary/foreign key constraints, ACID transaction properties, and fundamental JOIN mechanics.
Designing normalized schemas, primary/unique keys, foreign keys with cascading actions, and data integrity rules.
Transaction boundaries (COMMIT/ROLLBACK), WHERE vs HAVING filtering, and UNION vs UNION ALL behavior.
Portal Registration Required Before Exam
Your full name, location, and organization are verified and printed directly on your official diploma.
Exam Objectives & Tested Competencies
Proctored StandardRelational Schema Design, Primary/Foreign Keys & Normalization (1NF–3NF)
Evaluated in scenario-based proctored questions.
Advanced SQL Queries: Complex JOINs, Subqueries, CTEs & Aggregations
Evaluated in scenario-based proctored questions.
SQL Window Functions (ROW_NUMBER, RANK, DENSE_RANK, LAG/LEAD, OVER)
Evaluated in scenario-based proctored questions.
ACID Transactions, Locking, B-Tree Indexing & Query Plan Optimization
Evaluated in scenario-based proctored questions.
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