Book Image

Teradata Cookbook

By : Abhinav Khandelwal, Viswanath Kasi, Rajsekhar Bhamidipati
Book Image

Teradata Cookbook

By: Abhinav Khandelwal, Viswanath Kasi, Rajsekhar Bhamidipati

Overview of this book

Teradata is an enterprise software company that develops and sells its eponymous relational database management system (RDBMS), which is considered to be a leading data warehousing solutions and provides data management solutions for analytics. This book will help you get all the practical information you need for the creation and implementation of your data warehousing solution using Teradata. The book begins with recipes on quickly setting up a development environment so you can work with different types of data structuring and manipulation function. You will tackle all problems related to efficient querying, stored procedure searching, and navigation techniques. Additionally, you’ll master various administrative tasks such as user and security management, workload management, high availability, performance tuning, and monitoring. This book is designed to take you through the best practices of performing the real daily tasks of a Teradata DBA, and will help you tackle any problem you might encounter in the process.
Table of Contents (19 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface
Index

Unlocking the DBC


Like every system, Teradata has a super user, and this super user is called DBC. DBC is the super parent in the database hierarchy, and subsequent database/user are children or inherit from it only.

Teradata introduced its first system, named DBC/1012, in the early 1980s. Teradata in its early release only used to connect to mainframe systems, but with subsequent advancements, it started to connect to a whole lot of applications and databases.

As seen in the following screenshot, DBC sits at the top of the pyramid:

Teradata recommends not using this user; instead, create an admin user under DBC and use that. But in certain cases, you might need a DBC user, for example, if you want to grant access to other super users. Like other users, the DBC user can also be locked if multiple wrong attempts are made to log in.

Note

DBC stands for database computer.

A super user is of the utmost importance, and for that reason, DBC credentials need to be secured in the best way possible. If...