Introduction to Data Warehousing

Introduction to Data Warehousing

This course is an overview of basic data warehousing concepts, a guide for installing software and a step-by-step tutorial on using the software. This course is divided into three main sections:

Data Warehousing Basics

We begin with a conversation about data warehousing concepts, including the following:

• What is a data warehouse?

• Why do we need a data warehouse?

• What is Extract, Transform and Load (ETL)?

• The difference between OLAP and OLTP databases

• The Star and Snowflake schemas

• Fact and Dimension tables

These concepts can be difficult to understand, so I explain them using real conversation and examples. We have this conversation first so that you are familiar with the ideas as they are discussed in the later sections of the course.

Data Warehousing Software Installation

If you want to become good at data warehousing, you need to use the software. In this section I start by talking with you about the software and explain how the different pieces work together. Next is a step-by-step walkthrough of installing SQL Server Developer, SQL Server Management Studio (SSMS) and Visual Studio Community with the SQL Server Integration Services (SSIS) package. The versions of software we download are all free for you to use.

SSIS Tutorial: Create a Project and Basic Package with SSIS

The last section of the course is a step-by-step tutorial on using the ETL tool SSIS. The tutorial is broken down into nine steps:

• Step 1: Create a new integration services project

• Step 2: Add and configure a flat file connection manager

• Step 3: Add and configure an OLE DB connection manager

• Step 4: Add a data flow task to the package

• Step 5: Add and configure the flat file source

• Step 6: Add and configure the lookup transformations

• Step 7: Add and configure the OLE DB destination

• Step 8: Make the Lesson 1 package easier to understand

• Step 9: Test the Lesson 1 package

Before we being the tutorial, I discuss the steps in detail. I explain the source data, how the data will be transformed and how we will get the data to it's destination database.

An introduction to data warehouses, using SQL Server 2019, SSMS, Visual Studio & SSIS. Covers topics in the 70-463 exam.

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What you will learn

• Define and describe common data warehousing concepts
• Install SQL Server, SSMS and Visual Studio with the SSIS package
• Create an ETL package in SSIS

Rating: 4.3

Level: All Levels

Duration: 2 hours

Instructor: Maria Hamilton