Steve O Hearn Books

OCA Oracle database

By Steve O Hearn

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OCA Oracle database

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 Developer PL SQL Program Units Exam Guide

By Steve O Hearn

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OCA Oracle Database SQL Exam Guide Exam 1Z0 071

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.