A structured SQL learning project demonstrating advanced database concepts and practical implementation skills. This repository contains the complete coursework from an intensive SQL workshop, with each script representing a focused lesson on specific database management techniques.
This workshop covers enterprise-level SQL concepts through hands-on exercises using a vehicle dealership management system. Each lesson builds upon previous concepts, creating a comprehensive understanding of database design, optimization, and advanced query techniques.
- Database table creation and normalization techniques
- INSERT, SELECT, UPDATE operations
- Data integrity and relationship management
- Primary key and foreign key implementations
- Advanced WITH clause implementations
- Complex query decomposition using CTEs
- Multi-level data aggregation and analysis
- Performance optimization through query structuring
- Inner, outer, left, and right JOIN operations
- Complex multi-table relationships
- Advanced WHERE clause filtering techniques
- Data retrieval optimization strategies
- Scalar and correlated subquery implementations
- EXISTS and NOT EXISTS operations
- Complex data comparison and aggregation
- Performance considerations with nested queries
- Virtual table creation and management
- Data abstraction and security implementation
- Complex view hierarchies
- Query simplification through view design
- PL/pgSQL procedure development
- Parameter handling (IN, OUT, INOUT)
- Business logic implementation
- Error handling and transaction management
- ACID properties implementation
- Transaction control (BEGIN, COMMIT, ROLLBACK)
- Savepoint management
- Error handling and recovery strategies
- Automated business rule enforcement
- BEFORE and AFTER trigger implementations
- Data validation and audit trail creation
- Complex trigger logic and cascading operations
- Index strategy development
- Query performance analysis with EXPLAIN
- Composite index design
- Database optimization techniques
- Advanced SQL Query Writing: Complex multi-table joins, subqueries, and CTEs
- Database Design: Normalization, relationship modeling, and schema optimization
- Stored Procedures: Business logic implementation using PL/pgSQL
- Performance Tuning: Index optimization and query performance analysis
- Transaction Management: ACID compliance and data integrity assurance
- Trigger Development: Automated business rule enforcement
- View Architecture: Data abstraction and security implementation
The workshop uses a comprehensive vehicle dealership management system featuring:
- Vehicles & Vehicle Types: Inventory management and categorization
- Dealerships & Employees: Business entity and workforce management
- Sales & Customers: Transaction processing and customer relationship management
- Maintenance Logs: Service history and audit trails
- Mastery of advanced SQL concepts and PostgreSQL-specific features
- Understanding of enterprise database design principles
- Practical experience with performance optimization techniques
- Implementation of business logic through database objects
- Development of secure, scalable database solutions
Each lesson addresses real-world business scenarios commonly found in enterprise environments:
- Inventory management and reporting
- Sales analytics and performance tracking
- Customer relationship management
- Automated business process implementation
- Data security and access control
- PostgreSQL: Primary database management system
- PL/pgSQL: Stored procedure development
- SQL: Advanced query development and optimization
This project demonstrates practical SQL expertise through comprehensive coursework covering all major aspects of enterprise database management and development.