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  • Book Overview & Buying Building a Web Application with PHP and MariaDB: A Reference Guide
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Building a Web Application with PHP and MariaDB: A Reference Guide

Building a Web Application with PHP and MariaDB: A Reference Guide

By : Sai S Sriparasa
4.3 (3)
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Building a Web Application with PHP and MariaDB: A Reference Guide

Building a Web Application with PHP and MariaDB: A Reference Guide

4.3 (3)
By: Sai S Sriparasa

Overview of this book

This is a step-by-step, tutorial guide designed to help readers transition from beginners to more experienced developers using clear explanations. The variety of examples will help readers build, secure, and host real-time web applications. If you are a developer who wants to use PHP and MariaDB to build web applications, this book is ideal for you. Beginners can use this book to start with the basics and learn how to build and host web applications. Seasoned PHP Developers can use this book to get familiar with the new features of PHP 5.4 and 5.5, unit testing, caching, security, and performance optimization.
Table of Contents (12 chapters)
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11
Index

Deleting data

We will use the DELETE DML statement for deletion of data. The DELETE statement at a minimum expects the name of the table. Similar to the UPDATE statement, it is recommended that the DELETE statement is always used with filter criteria to avoid loss of data.

The DELETE statement should be used when a record has to be permanently removed from the table.

Note

To avoid permanent loss or deletion of data Boolean flags are used to determine if a record is active or inactive (1 or 0). These are called soft deletes and help us retain data in the long run.

Deleting data

In the preceding example, we are deleting the records from the students table that match the criterion of student_id equal to 4. As there is only one record that matches that criterion, that record has been deleted. The recommendations that were made above about how to use the filter criterion apply for the DELETE statement too.

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Tech Concepts
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Programming languages
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Building a Web Application with PHP and MariaDB: A Reference Guide
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