Power BI is a collection of services from Microsoft used for modeling, analyzing, and visualizing data. It involves data modeling by organizing and preparing data, data visualization through interactive reports and visuals to develop business insights, and a workflow that includes connecting data sources, loading data into a data model, and building visualizations. The Power BI desktop application is used to create data models and reports which can then be saved locally.

2. What is Power
BI?
• Huge collection of
services offered
by Microsoft for
modeling,
analyzing and
visualizing data.

3. Data
Modeling
• Process of organizing and preparing data
for storing it in a database.
• Filtering out rows we don’t need.
• Remove unnecessary or redundant
columns of data.
• Cleaning up data that is inconsistent or
low quality.
• Completely restructuring the data to put
into a new format.
• Ensures the data is consistent and
accurate.

4. Data Visualization
• Graphical representation of
data.
• Through live dashboards,
interactive reports, charts,
graphs, and other visual
representations, data
visualization helps users
develop powerful business
insight quickly and
effectively.

5. Workflow
• Getting data from some data source like a
database, spreadsheet, text file, or off a
webpage and then loading into a data model.
• Data model allows to build data
visualizations.

6. Power BI
desktop
• Free desktop application from Microsoft
that can be installed in windows
machine.
• Primary tool for creating data models and
reports in Power BI.
• Can save reports locally to hard drive as a
document with file extension of PBIX.

7. Power Query
• How to connect one or more data
sources and perform all necessary data
preparation steps to built data model.
• Will retrieve data, process it using data
preparation steps and load into final data
model.

8. X velocity
Engine
• Data model is stored in Power BI inside a tool
called x-velocity in memory analysis engine.
• Database inside a Power BI.
• Store data model and compresses the data
down into a fraction of its original size.