Steve O'Hearn Books

OCP Developer PL SQL Program Units Exam Guide with cd

By Steve O Hearn

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OCE Oracle Database SQL Certified Expert Exam Guide (Exam 1Z0-047) (Oracle Press)

By April J Wells, Steve O'Hearn

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A Fully Integrated Study System for OCA Exam 1Z0-047 Prepare for the Oracle Certified Associate SQL Certified Expert exam with help from this exclusive Oracle Press guide. In each chapter, you'll...

OCA Oracle database

By Steve O Hearn

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OCA Oracle database

By Steve O Hearn

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OCP Developer PL SQL Program Units Exam Guide

By Steve O Hearn

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OCA Oracle Database SQL exam guide

By Steve O Hearn

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"Features detailed explanations, examples, practice questions, and chapter summaries. 'Certification Objectives,' 'Exam Watch,' and 'On the Job' sections reinforce salient points throughout"--Page...

OCA Oracle Database SQL exam guide

By Steve O Hearn

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"Features detailed explanations, examples, practice questions, and chapter summaries. 'Certification Objectives,' 'Exam Watch,' and 'On the Job' sections reinforce salient points throughout"--Page...

OCA Oracle Database SQL exam guide

By Steve O Hearn

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"Features detailed explanations, examples, practice questions, and chapter summaries. 'Certification Objectives,' 'Exam Watch,' and 'On the Job' sections reinforce salient points throughout"--Page...

Ocp MySQL 5. 6 Database Administrator Exam Guide Exam 1z0 883

By Steve O Hearn

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OCP MySQL 5.6 Database Administrator All-in-One Exam Guide

By Steve O Hearn

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.