Book Image

Learning ServiceNow. - Second Edition

5 (1)
Book Image

Learning ServiceNow. - Second Edition

5 (1)

Overview of this book

This book is an updated version of Learning ServiceNow, that will cover the new and updated features of the ServiceNow platform. It will show you how to put important ServiceNow features to work in the real world, while introducing key concepts via examples of managing and automating IT services. It'll help you build a solid foundation of knowledge, and will demonstrate how to effectively implement and configure modules within ServiceNow. We'll show you how to configure and administer your instance, and then move on to building strong user interfaces and creating powerful workflows. We also cover other key elements of ServiceNow, such as notifications, security, reporting, and custom development. You will learn how to improve and automate your business' workflow and processes. By the end of this book, you will be able to successfully configure and manage ServiceNow like a pro.
Table of Contents (19 chapters)
Learning ServiceNow Second Edition
Contributors
Preface
Index

Database table inheritance


When tables share more than a few of the same fields, it is quite often beneficial to extend other tables. Indeed, there are a few tables in ServiceNow which are meant only to be extended, and never to have records created on themselves. The Task [task] table is a prime example that we already have some familiarity with. We'll go into some detail on the task table in particular in a later chapter, but we'll use it as an example here just to touch on the topic of inheritance.

When one table extends another table, the child table inherits any fields on the parent table. All inherited fields are on the child table, and do not need to be dot-walked to, to be accessed. This has innumerable benefits, such as being able to search for a record on a base table, and discover records in all child-tables. Again, using the task table as an example, you might want to see all work assigned to you. The task table is generally where work records are stored (incident tickets, requests...