Book Image

Hands-On Software Architecture with Java

By : Giuseppe Bonocore
5 (1)
Book Image

Hands-On Software Architecture with Java

5 (1)
By: Giuseppe Bonocore

Overview of this book

Well-written software architecture is the core of an efficient and scalable enterprise application. Java, the most widespread technology in current enterprises, provides complete toolkits to support the implementation of a well-designed architecture. This book starts with the fundamentals of architecture and takes you through the basic components of application architecture. You'll cover the different types of software architectural patterns and application integration patterns and learn about their most widespread implementation in Java. You'll then explore cloud-native architectures and best practices for enhancing existing applications to better suit a cloud-enabled world. Later, the book highlights some cross-cutting concerns and the importance of monitoring and tracing for planning the evolution of the software, foreseeing predictable maintenance, and troubleshooting. The book concludes with an analysis of the current status of software architectures in Java programming and offers insights into transforming your architecture to reduce technical debt. By the end of this software architecture book, you'll have acquired some of the most valuable and in-demand software architect skills to progress in your career.
Table of Contents (20 chapters)
1
Section 1: Fundamentals of Software Architectures
7
Section 2: Software Architecture Patterns
14
Section 3: Architectural Context

Exploring relational databases

Relational databases are hardly a new idea. The idea was first introduced by Edgar F. Codd in 1970. Omitting the mathematical concepts behind it (for brevity), it says that data in a relational database is, as everybody knows, arranged into tables (we had a quick look at this in Chapter 7, Exploring Middleware and Frameworks, in the Persistence section).

Roughly speaking, each table can be seen as one of the objects in our business model, with the columns mapping to the object fields and the rows (also known as records) representing the different object instances.

In the following sections, we are going to review the basics of relational databases, starting with keys and relationships, the concept of transactionality, and stored procedures.

Keys and relationships

Depending on the database technology, it's a common idea to have a way to identify each row. This is commonly done by identifying a field (or a set of fields) that is unique...