This book "Foundations of Big Data Processing: A Comprehensive Guide to Pig, Hive, and HBase" as it navigates through pivotal frameworks. Chapter 1 introduces Pig, its applications, and comparisons with databases, detailing Grunt, Pig Latin, and essential elements. Chapter 2 delves into statements, control flow, types, null values, and user-defined functions. Chapter 3 covers Java-based UDFs. Chapter 4 focuses on Hive, encompassing architecture, services, installation, HiveQL, data types, tables, and advanced topics like joins and subqueries. Chapter 5 explores HBase, including concepts, schema design, and comparisons with RDBMS. This guide is essential for mastering Big Data applications with Pig, Hive, and HBase.