Book Image

CompTIA Data+: DAO-001 Certification Guide

By : Cameron Dodd
Book Image

CompTIA Data+: DAO-001 Certification Guide

By: Cameron Dodd

Overview of this book

The CompTIA Data+ certification exam not only helps validate a skill set required to enter one of the fastest-growing fields in the world, but also is starting to standardize the language and concepts within the field. However, there’s a lot of conflicting information and a lack of existing resources about the topics covered in this exam, and even professionals working in data analytics may need a study guide to help them pass on their first attempt. The CompTIA Data + (DAO-001) Certification Guide will give you a solid understanding of how to prepare, analyze, and report data for better insights. You’ll get an introduction to Data+ certification exam format to begin with, and then quickly dive into preparing data. You'll learn about collecting, cleaning, and processing data along with data wrangling and manipulation. As you progress, you’ll cover data analysis topics such as types of analysis, common techniques, hypothesis techniques, and statistical analysis, before tackling data reporting, common visualizations, and data governance. All the knowledge you've gained throughout the book will be tested with the mock tests that appear in the final chapters. By the end of this book, you’ll be ready to pass the Data+ exam with confidence and take the next step in your career.
Table of Contents (24 chapters)
1
Part 1: Preparing Data
7
Part 2: Analyzing Data
13
Part 3: Reporting Data
19
Part 4: Mock Exams

Understanding master data management

Master data management (MDM) is effectively the process of creating and managing a centralized data system. The idea is that you create a golden record, or a single source of truth. Having one place where all of your data is clean, standardized, consolidated, and up to date has many benefits. You end up with higher data quality, higher data integrity, cleaner data, and much faster and easier access to the data, and you can even format the data so that it is ready to report. Also, if you create new data objects, you can connect them to the golden record and automatically populate the fields with the appropriate data. You can even automate compliance checks. Effectively, you have the data in its highest quality on tap and ready to use by anyone who has access.

That said, MDM is not a practice that is used by every company. It sounds great, but it can also be a lot of work and expensive to set up. There are even variations, where MDM is only practiced...