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Teradata Fundamentals

Pablo Maldonado

Do you need to get your way around Teradata and do not have time? In this short, to-the-point book I can help you answer the most common questions I have encountered during my experience as a Teradata user and technical trainer.

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About

About

About the Book

The book consists of a series of lecture notes on the corporate training the author has delivered across the world. It is meant to be as concise as possible for people working with Teradata that need practical answers now, instead of reading the whole documentation.

Since the audience is working professionals, a bit of experience working with other databases or with Teradata itself is recommended.

You can check a preview of the book as well as the code samples in www.learndataskills.eu

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Author

About the Author

Pablo Maldonado

Hi, I’m Pablo! I teach data science at companies and universities around the world.

After a few years in consulting (pricing, financial crime analytics, IoT, ecommerce), I decided to focus on teaching others.

Most of my time is devoted to teaching and individual mentoring, but I still do consulting to keep my skills fresh.

Contents

Table of Contents

Introduction

  1. Relational Database Architecture
  2. Teradata Architecture
  3. Storage Architecture
  4. Primary Indexes

Indexes

  1. Partitioned primary index
  2. Secondary Index
  3. Join Indexes
  4. Exercise

Tables

  1. CREATE TABLE
  2. Views
  3. Useful system tables
  4. Measuring skew factors
  5. Exercise

Macros

Joins - Types and strategies

  1. Processing joins
  2. Improvement tricks

Analysis of query plans

  1. Collecting Statistics
  2. Explaining EXPLAIN

Subqueries and Correlated subqueries

  1. Recursive Queries
  2. Exercise
  3. Solution

OLAP functions

Stored Procedures

  1. IF inside a Stored Procedure
  2. Loops
  3. Multiple BEGIN/END statements
  4. Triggers

Performance Monitoring

  1. 1. Bad Query
  2. 2. Delay Time
  3. 3. Blocking
  4. 4. Server State
  5. 5. Skewness
  6. Some tips for improving your query
  7. Identify suspect queries
  8. Monitoring
  9. Prevention

Compression

  1. MVC
  2. ALC
  3. BLC
  4. Compression and Query Performance

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