Author: Dr. Srideivanai Nagarajan

ISBN: 978-81-988877-4-0

DOI: https://doi.org/10.59646/fs/397

Date of Publication: June 18, 2025

About the Book:

The “Foundations of Structured Query Language” is a comprehensive and thorough guide designed to provide readers with a deep and practical understanding of SQL, spanning from its historical evolution to the most advanced techniques in database management. The book begins with an introduction to SQL’s history, evolution, and various standards, such as SQL-86 to SQL:2023, giving readers a contextual understanding of the language’s development over time. It covers essential SQL concepts including data types, such as numeric, character, and binary types, as well as operators like arithmetic, logical, comparison, and bitwise operators, which are crucial for creating effective queries. The book also delves into SQL’s core functionality, exploring how to use SQL commands like CREATE, ALTER, INSERT, UPDATE, and DELETE, and examines the critical concepts of joins, nested queries, and subqueries for constructing complex queries. In addition to foundational concepts, the book also covers Oracle-specific elements, introducing PL/SQL with its features, structure, and how to embed SQL statements within PL/SQL blocks. It provides a detailed exploration of cursors, stored procedures, functions, and triggers, offering practical examples and demonstrating how to use them to manipulate and manage data efficiently. Optimization techniques are extensively covered, including how to create views, indexes, and manage privileges using GRANT and REVOKE statements. The book also offers strategies for finding slow SQL queries and improving query performance through effective optimization methods. Further, the book addresses database objects and collections, explaining concepts such as indexes, tables, bulk insertions, and the use of dynamic SQL. It also introduces more advanced topics, including handling exceptions, using packages for organizing PL/SQL subprograms, and understanding data dictionary views. In the later sections, the book emphasizes best practices for writing high-quality PL/SQL code, such as unit testing, code coverage, refactoring, and maintaining clean and efficient code. Tools like Toad’s CodeXpert Utility are also discussed to aid in optimizing and maintaining code. Throughout, “Foundations of Structured Query Language” provides real-world applications and examples, helping readers understand not only the theoretical aspects of SQL but also how to implement them in practice. Whether for beginners or advanced professionals, the book is an essential resource for mastering SQL and PL/SQL, enabling readers to manage and optimize databases effectively in any environment.