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DecodeLabs Week 3 - SQL Data Analysis Project

Project Overview

This project was completed as part of the DecodeLabs Data Science Internship Program.

The objective of this project was to analyze data using SQL queries and relational database concepts. The project demonstrates how SQL can be used to retrieve, filter, sort, group, and summarize data to generate meaningful business insights.

Dataset Summary

The project uses a structured dataset stored in both CSV and SQLite database formats. SQL queries were performed to explore the data, identify trends, and generate analytical results.

Objectives

  • Query data using SQL
  • Filter records using WHERE clauses
  • Sort results using ORDER BY
  • Group data using GROUP BY
  • Calculate aggregate values using COUNT, AVG, and SUM
  • Generate insights from structured datasets

Tools Used

  • SQL
  • SQLite
  • DB Browser for SQLite
  • CSV Dataset
  • Database Analytics

Technologies

  • SQL
  • SQLite
  • Relational Databases
  • Data Analysis
  • Database Management

Project Files

  • dataset_week3.csv
  • week3_data_analytics.db
  • sql_where_clause.png
  • sql_order_by.png
  • sql_group_by_count.png
  • sql_avg_function.png
  • sql_sum_function.png

Skills Demonstrated

  • SQL Query Writing
  • Database Analysis
  • Data Retrieval
  • Data Aggregation
  • Data Filtering
  • Relational Database Management
  • Problem Solving

SQL Queries Demonstrated

WHERE Clause

WHERE Query

ORDER BY

ORDER BY Query

GROUP BY and COUNT

GROUP BY Query

AVG Function

AVG Query

SUM Function

SUM Query

Results

The project successfully demonstrated key SQL concepts used in real-world data analysis.

Key outcomes included:

  • Filtering records using WHERE clauses
  • Sorting data using ORDER BY
  • Grouping records using GROUP BY
  • Calculating summary statistics using COUNT, AVG, and SUM
  • Generating insights from structured datasets

What I Learned

Through this project, I strengthened my SQL and database analysis skills by working with structured datasets and performing analytical queries. I learned how to retrieve, organize, summarize, and analyze data using SQL techniques commonly used by data analysts and database professionals.

Author

Eddy Bartolome

About

DecodeLabs Week 3 SQL Data Analysis Project using SQL Queries, SQLite, and Database Analytics

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