SQL Engineer
Master Oracle SQL for enterprise retail workloads — joins, analytics, hierarchical queries, execution plans, and performance tuning with real-world patterns from production databases.
Follow the phases in order for the best learning experience. Each phase builds upon the technical foundations established in the previous section.
Fundamentals
Core SELECT, filtering, and data types.
Joins & Intermediate SQL
Joins, subqueries, and intermediate patterns.
Advanced SQL
Complex queries and advanced techniques.
Analytics & Pattern Matching
Window functions, analytics, and pattern matching.
SQL Masterclass: Hierarchical Queries
Master Oracle SQL hierarchical queries. Learn how to traverse trees and graphs using START WITH ... CONNECT BY, SYS_CONNECT_BY_PATH, and CONNECT_BY_ISLEAF to query organizational charts and BOMs.
Oracle SQL Analytical Functions Deep Dive
Master Oracle Window and Analytical Functions. Learn how to use OVER(), PARTITION BY, ROW_NUMBER(), RANK(), LEAD(), and LAG() for complex reporting.
Advanced SQL Analytics: Row Pattern Matching (MATCH_RECOGNIZE)
Master Oracle SQL's MATCH_RECOGNIZE clause. Learn how to perform complex row pattern matching, detect trends, sessionize data, find consecutive gaps, and analyze time-series data without procedural PL/SQL code.
Architecture & Data Modeling
Temporary tables, partitioning, and data modeling.
Data Modeling & Database Design Best Practices
Master relational data modeling, database design principles, normalization rules (1NF, 2NF, 3NF), Star Schemas, slowly changing dimensions (SCD), and the Entity-Attribute-Value (EAV) anti-pattern. A complete architectural guide for software engineers.
SQL Masterclass: Table Partitioning Strategies for VLDB
Master Oracle Table Partitioning for Very Large Databases (VLDB). Learn Range, Hash, and List partitioning strategies to enable partition pruning and dramatically accelerate queries.
SQL Masterclass: Mastering the Oracle Data Dictionary
Learn how to query Oracle's metadata using ALL_, DBA_, and V$ views. Discover how to dynamically generate scripts and troubleshoot database performance.
SQL Architecture: CTEs vs. Global Temporary Tables (GTTs)
A comprehensive guide on when to use Common Table Expressions (CTEs/WITH clause), Global Temporary Tables (GTTs), and Private Temporary Tables in Oracle SQL. Understand memory overhead, undo/redo generation, and performance implications.
JSON, XML & Materialized Views
Semi-structured data and materialized views.
SQL Masterclass: JSON & XML Processing in Oracle
Learn how to natively generate, parse, and query JSON and XML payloads directly within Oracle SQL without needing a middle-tier application.
SQL Masterclass: Materialized Views & Query Rewrite
Accelerate your data warehouse dashboards using Oracle Materialized Views. Learn about Fast Refresh, ON COMMIT refreshes, and how to configure Query Rewrite to intercept and speed up user queries automatically.
Performance Tuning
Execution plans and query optimization.
SQL Performance Tuning and Optimization: A Comprehensive Guide
Master SQL performance tuning techniques, execution plans, bind variables, and indexing strategies to optimize database queries. A complete guide to Oracle SQL performance optimization for developers and DBAs.
SQL Performance: Mastering Execution Plans & The Cost-Based Optimizer (CBO)
A definitive guide to SQL Performance Tuning. Master the Oracle Cost-Based Optimizer (CBO), read EXPLAIN PLANs, analyze access paths (Full Table Scans, Index Range Scans), understand join methods (Nested Loops, Hash Joins), and learn how to rewrite slow queries using real-world AWR/ASH metrics.
RC:OMS
Multi-channel order management with double-entry inventory ledger. Amazon, Flipkart, Shopify, WooCommerce — one source of truth.
Launch demo →RC:Storefront
Self-hosted headless e-commerce. Your server, your data, zero transaction fees. Native RC:OMS inventory sync.
Visit Storefront →RC:Pulse
AI-powered retail analytics and demand forecasting — built natively on top of your RC:OMS and Storefront data.
Request early access →