Phase 6: Complex Database Reports, SQL, Stored Procedures, and Relational Algebra

Overview

In this phase we demonstrate how to extract, analyze and summarize data from the Wedding Planner database using advanced SQL.

We focus on generating complex reports across multiple related tables, and implementing reusable logic through stored procedures and views.

These techniques are important because in a real system the database is not used only for storing data, but also for producing meaningful insights such as guest statistics, financial reports, venue utilization analysis, RSVP conversion analysis, and operational summaries.

Phase Structure

This phase is divided into the following analytical scenarios:

Scenario	Description
Scenario 1: Budget vs Actual Expenditure Analysis	Financial analysis of wedding budgets and actual vendor costs
Scenario 2: Venue Capacity Utilization Analysis	Analysis of venue occupancy and attendance metrics
Scenario 3: Event RSVP Conversion Rate Analysis	RSVP response and attendance conversion analysis
Synthesis and Performance Considerations	Integrated analytical query and optimization strategies

Technologies and Concepts Used

• Advanced SQL queries
• Aggregate functions
• Multi-table joins
• Relational algebra expressions
• PostgreSQL stored procedures
• Temporary tables
• Analytical reporting
• Performance optimization strategies

Summary

The reports implemented in this phase demonstrate how relational databases can be used not only for transactional processing, but also for analytical and reporting purposes.

The generated reports provide insights into financial planning, attendance analysis, RSVP effectiveness, and overall wedding management efficiency.