Java in a Nutshell provides a comprehensive and concise overview of the Java programming language. This book serves as a valuable resource for both beginners and experienced programmers alike. It covers all the essential aspects of Java, including its syntax, libraries, and key features.

SQL is a database language used to build and maintain database objects, and is at the heart of many enterprise applications. If you're involved in software development, you're likely to use some level of SQL. When working with SQL, you need a good syntax reference. Although SQL is a standardized language, the implementation of SQL is not standardized, and there are many differences in software from one vendor to another.