In this chapter, you’ll set up your Databricks environment and explore the Airbnb Open Dataset. You’ll learn essential SQL skills for querying, filtering, and summarizing data within the Databricks Lakehouse. Through exercises, you’ll practice simplifying complex queries with subqueries and optimizing performance for large datasets using the `OPTIMIZE` command. This chapter provides the foundational skills needed to analyze and manage data efficiently in Databricks.

Introduction

Databricks environment

Analyze data structure

First query

Data quality assessment

Subqueries

Introduction to Case Study

In this chapter, you will explore advanced analytical techniques using the Airbnb dataset in Databricks SQL Notebooks. Through hands-on exercises, you will calculate descriptive statistics and leverage window functions for complex computations. You’ll also perform feature engineering to create meaningful metrics that drive actionable insights. By the end of this chapter, you’ll be equipped to confidently apply advanced analytics in real-world consulting scenarios for actionable insights, aligning with Data X’s data-driven strategy.

Insight analytics

Analysing relationships

Using window functions

Feature engineering

Compose summary statistics

Data driven recommendations

Analytics Applications

Data visualization is a powerful tool for enhancing the understanding of complex datasets and communicating key insights effectively.

In this chapter, you will explore the art and science of designing interactive visualizations and building comprehensive dashboards using Databricks.

By leveraging various chart types, such as bar charts, heatmaps, and maps, you’ll uncover data distributions, correlations, and geographical trends. Interactive filters will enable dynamic exploration of neighborhoods, review scores, and price ranges.

Visualization using Databricks AI/BI

Dashboard setup

Define the goal

Visualize trends

Visualize correlations

Conclusion

 Data Visualization

Metadata sheet

In this case study, you will learn how to perform data analysis in Databricks using SQL in Databricks.
You'll start by exploring and cleaning the Airbnb dataset, then move on to building visualizations and dashboards in Databricks.
By the end of the case study, you'll be able to identify top-performing neighbors and room types, providing actionable strategies to gauge demand and improve host performance with data-driven precision.

<h2>Data Analysis in Databricks</h2>
<p>This case study offers a hands-on approach to upskilling data analysis in Databricks, focusing on the use of SQL. Participants will start with the Airbnb dataset, containing data on listings, bookings, and host details. The initial phase of the case study involves exploring this dataset to understand its structure and content, followed by the necessary data-cleaning steps and loading the data into Databricks. This foundational step ensures the analysis is based on accurate and relevant data.</p> 
<h2>Developing Visualizations and Dashboards</h2> 
<p>After cleaning the data, the case study shifts to a critical aspect of data analysis—building visualizations and dashboards. You will learn how to use Databricks’ powerful visualization tools to create insightful graphs and dashboards. These visualizations will help you identify trends, patterns, and outliers in the data. By transforming raw data into easily understandable visual formats, you'll gain the ability to convey complex information succinctly, making it accessible to stakeholders at all levels.</p>
 <h2>Strategic Analysis and Decision Making</h2> <p>The final part of the case study focuses on applying the cleaned data and visual insights to identify top-performing neighborhoods and room types within the Airbnb dataset. You will use SQL queries in Databricks to analyze performance metrics and derive actionable strategies that can help hosts boost their visibility and performance. By the end of this case study, you will be equipped with the skills to use data-driven insights to influence business decisions and improve operational effectiveness.</p>

Introduction to Databricks

Intermediate SQL

Learn to analyze Airbnb data using SQL in Databricks, create dashboards, and derive actionable insights.

Case Study: Data Analysis in Databricks

Subqueries

Case Study: Data Analysis in Databricks

Interaktive Übung