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Business Analyst

Become a Professional Business Analyst by mastering Advanced SQL, Power BI, and Advanced DAX Queries to build a highly competitive and sought-after career profile.

Course Instructor Parthiban Kannan

₹2999.00 ₹9999.00 70% OFF

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Become the Business Analyst

Master the skills to become a Business Analyst with our comprehensive course! Learn data analysis, visualization, and problem-solving to drive business decisions effectively.

Data Extraction

Learn to gather raw data from various sources efficiently.

Data Transformation

Clean, process, and structure data for analysis

Data Modeling

Build structured data models for insightful decision-making.

Data Visualization

Present data effectively using charts and dashboards.

How it works?

Enroll, learn at your own pace with step-by-step lessons, and get expert support anytime via text, screen share, or voice chat. Apply your skills to real-world projects and advance your Business Analyst career!

Master the basics to advanced techniques, gaining the skills to build Power BI dashboards and write complex SQL and DAX queries in Tamil.

Study at your own pace, anytime and anywhere, with lifetime access to recorded lessons and resources

Get your queries resolved anytime through text, screen share, or voice chat, plus enjoy weekly Live Q&A sessions on our Technical Support Channel for seamless learning!

With our dedicated Career99 placement guidance, we support and refer committed students to secure their dream jobs.

Essential Tech Stack for Business Intelligence

Unlock the power of data with the must-have tools for every Business Analyst. Learn to analyze, visualize, and present insights using industry-standard platforms.

Advanced SQL

📌 The backbone of data extraction and manipulation.

📌 Helps retrieve, clean, and transform data from databases efficiently.

📌Essential for creating reports and making data-driven decisions.


Master Power BI

📌 A powerful visualization tool for interactive dashboards and reports.

📌 Helps analyze and present insights from complex datasets.

📌 Connects seamlessly with multiple data sources for real-time reporting.


Advanced DAX

📌 Optimizes and enhances DAX queries for better Power BI performance.

📌 Helps in advanced calculations and data modeling.

📌 Essential for troubleshooting and improving report efficiency.

Course Curriculum

3 Subjects

THE001A - Power BI Essentials

94 Learning Materials

Introduction

Course Introduction

Video
00:06:53

Introduction

PDF

Download Power BI

Video
00:01:48

Installation

Video
00:06:38

Navigating to User Interface

Video
00:06:02

Course Data - Part 01

ZIP

Data Extraction

Manual Entry Data

Video
00:06:25

Load Excel File

Video
00:02:30

Load CSV File

Video
00:04:37

Load XML File

Video
00:02:10

Load From PDF

Video
00:01:21

Connecting to the Database

Video
00:05:28

Connect Web Data

Video
00:02:20

Connect WEB API

Video
00:09:02

Data Transformation

Power Query Editor

Video
00:09:05

Re-use the Data Model

Video
00:05:24

Manage Parameters

Video
00:03:56

Filtering Rows By Number Based Columns

Video
00:05:53

Filtering Rows by Text Based Columns

Video
00:04:19

Filtering Rows By Date Based Columns

Video
00:06:43

Advanced Filtering with Logical Operations

Video
00:06:58

Manage Queries

Video
00:07:55

Manage Columns

Video
00:02:20

Keep and Remove Rows

Video
00:04:46

Handling Duplicates

Video
00:03:15

Remove Blank Rows

Video
00:00:20

Handling Error Values

Video
00:03:03

Sorting Data

Video
00:02:25

Split Column Values by Delimiter

Video
00:06:31

Split Column By Other Features

Video
00:05:09

Group By Count

Video
00:04:31

Group By Sum

Video
00:02:39

Group By Average

Video
00:00:53

Group By Median

Video
00:00:49

Group By Min and Max

Video
00:01:41

Finding Duplicates Inside Group

Video
00:02:23

Change Data Type

Video
00:03:22

Manage Headers

Video
00:01:12

Replace Values

Video
00:02:30

Append Queries

Video
00:05:22

Combine Files

Video
00:03:03

Merge Queries

Video
00:07:16

Merge - All Types

Video
00:10:15

Transpose Rows to Columns

Video
00:01:08

Reverse Rows

Video
00:00:43

Count Rows

Video
00:01:14

Rename Column

Video
00:00:33

Fill Neighbour Values

Video
00:01:10

Rearranging Columns

Video
00:01:04

Convert to List

Video
00:01:12

Text Formatting

Video
00:03:19

Text Extraction

Video
00:04:28

Statistics

Video
00:03:57

Math Operations

Video
00:04:38

Data Time Operations

Video
00:04:08

Execute R Script

Video
00:02:21

Execute Python Script

Video
00:02:28

Add column from Example

Video
00:02:29

Adding Custom Column

Video
00:01:58

Adding Index Column

Video
00:01:25

Adding column by Custom Function

Video
00:05:01

Duplicating the Column

Video
00:00:11

Adding Conditional Column

Video
00:02:35

View Options

Video
00:03:31

Query Dependency

Video
00:04:28

Data Modeling

Training Institute Model

ZIP

Model Relationship

Video
00:11:35

Measures and Calculated Columns

Video
00:08:44

DAX Table

Video
00:09:11

Calculation Groups

Video
00:07:24

Model Security

Video
00:04:02

Q&A Setup

Video
00:08:05

Data Visualization

Practice Data for Data Visualization

ZIP

Bar and Column Charts

Video
00:13:41

Line and Area Charts

Video
00:07:23

Line and Stacked or Clustered Column Chart

Video
00:02:56

Ribbon Chart

Video
00:01:38

Waterfall Chart

Video
00:03:28

Funnel Chart

Video
00:02:30

Scatter Chart

Video
00:05:25

Pie and Donut Chart

Video
00:06:16

Treemap

Video
00:02:47

Map and Filled Maps

Video
00:04:38

Gauge Chart

Video
00:04:07

Key Performance Indicator

Video
00:01:28

Cards and Slicers

Video
00:08:27

Table and Matrix

Video
00:03:57

Visualization using Python Script

Video
00:03:41

Visualization using R Script

Video
00:02:01

Key Influencers

Video
00:03:03

Decomposition Tree

Video
00:05:54

Narrative

Video
00:02:33

Prepare Report & Publish

Video
00:37:16

Acknowledgement

Course Completion Certification Form

External Link

THE003 - Professional SQL Analyst

74 Learning Materials

Introduction to SQL

Download and Install PostgreSQL

Video
00:03:33

Connect and Register SQL Server

Video
00:02:50

Create a New Database

Video
00:00:00

Course Data

ZIP

Create Table and Columns

Video
00:24:23

Data Retrieval and Querying

Retrieve Data

Video
00:00:00

Source - Retrieve Data

ZIP

Filter Data

Video
00:16:28

Source - Filter Operations

ZIP

Logical Operations on Filters

Video
00:08:52

Source - Logical Operations

ZIP

Wildcard Filters

Video
00:11:04

Source - Wildcard Filters

ZIP

Text Manipulation Functions

Video
00:38:50

Source - Text Manipulation Functions

ZIP

Numerical Operations

Video
00:21:39

Source - Numerical Operations

ZIP

Date Time Functions

Video
00:29:43

Source - Date Time Functions

ZIP

Aggregate, Group By and Having Clause

Video
00:25:30

Source - Aggregate, Group By and Having Clause

ZIP

Cartesian | Cross Joins

Video
00:08:47

Source - Cartesian | Cross Joins

ZIP

Inner Join

Video
00:07:34

Source - Inner Join

ZIP

LEFT Join

Video
00:06:32

Query - LEFT Join

ZIP

RIGHT Join

Video
00:03:05

Query - RIGHT Join

ZIP

Full Join | Full Outer Join

Video
00:02:39

Query - Full Join

ZIP

SELF Join

Video
00:07:11

Source - SELF Join

ZIP

Data Modification and Management

Create Table & Columns

Video
00:05:28

Query - CREATE TABLE and COLUMNS

ZIP

Insert Rows

Video
00:07:11

Query - Insert Rows

ZIP

READ Operation

Video
00:02:32

Query - READ Operations

ZIP

Update Values

Video
00:04:58

Query - Update Values

ZIP

DELETE Rows

Video
00:01:00

Query - DELETE Rows

ZIP

DELETE Columns

Video
00:01:14

Query - DELETE Columns

ZIP

Truncate and DROP Table

Video
00:01:36

Query - Truncate and DROP Table

ZIP

Advanced SQL Techniques

Sub Query

Video
00:15:34

Query - Sub Query

ZIP

Nested Query

Video
00:09:21

Source - Nested Query

ZIP

Common Table Expressions - CTE

Video
00:11:10

Query - Common Table Expression

ZIP

OVER - Window Function

Video
00:02:36

Query - OVER

ZIP

PARTITION BY - Window Function

Video
00:03:57

Query - Partition By

ZIP

Order By - Window Function

Video
00:03:16

Query - Order By in Window Function

ZIP

ROWS Frame - Window Function

Video
00:03:55

Query - ROWS Frame

ZIP

RANGE Frame - Window Function

Video
00:05:10

Query - RANGE Frame

ZIP

First Value - Window Function

Video
00:06:13

Query - First Value

ZIP

Last Value - Window Function

Video
00:05:48

Query - Last Value

ZIP

Nth Value - Window Function

Video
00:04:00

Query - Nth Value

ZIP

Ranking - Window Function

Video
00:04:54

Query - Ranking

ZIP

NTile - Window Function

Video
00:02:18

Query - NTILE

ZIP

Acknowledgement - Course Completion

Get Your Certificate

External Link

Advanced DAX Queries

298 Learning Materials

Introduction to DAX & DAX Studio

Pre-requisites

Video
00:02:07

DAX Introduction

Video
00:03:30

DAX Studio - Introduction

Video
00:03:41

Course Data - AdventureWorks Sales - Microsoft

ZIP

Connecting to Power BI Data Model

Video
00:02:58

DAX Queries - Foundation

EVALUATE

Video
00:10:50

Query - EVALUATE

ZIP

ORDER BY

Video
00:05:17

Query - ORDER BY

ZIP

START AT

Video
00:08:13

Query - START AT

ZIP

ROW

Video
00:03:52

Query - ROW

ZIP

VAR - Introduction

Video
00:08:25

Query - VAR Introduction

ZIP

DEFINE VARIABLES

Video
00:07:22

Query - DEFINE VARIABLES

ZIP

DAX Operators

Arithmetic Operations

Video
00:12:40

Query - Arithmetic Operators

ZIP

Comparison Operators

Video
00:08:29

Query - Comparison Operators

ZIP

Text Concatenation Operator

Video
00:03:18

Query - Text Concatenation Operator

ZIP

Logical Operators

Video
00:23:30

Query - Logical Operators

ZIP

Table Manipulation Functions

Data for Table Manipulation

ZIP

Distinct Function

Video
00:02:34

Query - DISTINCT

ZIP

Add Columns

Video
00:11:44

Query - ADDCOLUMNS

ZIP

Generate Series

Video
00:02:06

Query - GENERATE SERIES

ZIP

Creating Data Table

Video
00:09:17

Query - DATATABLE

ZIP

Cross Join or Cartesian Join

Video
00:04:22

Query - CROSSJOIN

ZIP

Generate - Combining Tables based on LEFT Table

Video
00:08:07

Query - Generate

ZIP

Generate All

Video
00:02:17

Query - Generate All

ZIP

Natural Inner Join

Video
00:03:26

Query - Natural Inner Join

ZIP

Natural Left Outer Join

Video
00:02:38

Query - Natural Left Outer Join

ZIP

Summarize

Video
00:04:43

Query - Summarize

ZIP

Rollup

Video
00:04:59

Query - Rollup

ZIP

Rollup Group

Video
00:03:31

Query - Rollup Group

ZIP

Summarize Columns

Video
00:03:45

Query - Summarize Columns

ZIP

Rollup Add Is SubTotal

Video
00:04:06

Query - Rollup Add Is Subtotal

ZIP

Add Missing Items

Video
00:03:59

Query - Add Missing Items

ZIP

Rollup Is SubTotal

Video
00:05:46

Query - Rollup Is SubTotal

ZIP

SET Operations - Except, Union & Intersect

Video
00:14:08

Query - SET Operations - Except, Union & Intersect

ZIP

Top N

Video
00:07:48

Query - Top N

ZIP

Aggregate Functions

Practice Data for Aggregate Functions

ZIP

Count and CountX

Video
00:04:44

Query - Count and CountX

ZIP

CountA and CountAX

Video
00:03:07

Query - CountA and CountAX

ZIP

Counting Blank Values

Video
00:01:31

Query - Counting Blank Values

ZIP

Counting Rows

Video
00:01:02

Query - Counting Rows

ZIP

Counting Distinct Values

Video
00:02:44

Query - Counting Distinct Values

ZIP

Finding Minimum Values

Video
00:05:09

Query - Finding Minimum Values

ZIP

Finding Minimum Values with Expression

Video
00:01:32

Query - Finding Minimum Values with Expression

ZIP

Finding Maximum Values

Video
00:03:07

Query - Finding Maximum Values

ZIP

Sum Operations

Video
00:02:25

Query - SUM Operations

ZIP

Product Operations

Video
00:02:41

Query - Product Operations

ZIP

Average Function

Video
00:04:15

Query - Average Function

ZIP

Logical Function

Data For Logical Function

ZIP

AND Operation

Video
00:03:07

Query - AND Operation

ZIP

OR Operation

Video
00:02:16

Query - OR Operation

ZIP

NOT Operation

Video
00:01:24

Query - NOT Operation

ZIP

IF Condition

Video
00:04:53

Query - IF Condition

ZIP

True and False

Video
00:02:33

Query - True and False

ZIP

IF.Eager Function

Video
00:08:48

Query - IF.Eager Function

ZIP

If Error

Video
00:03:07

Query - If Error Function

ZIP

COALESCE Function

Video
00:04:51

Query - COALESCE Function

ZIP

Switch with Exact Match

Video
00:03:18

Query - Switch with Exact Match

ZIP

Switch with Numerical Value Comparison

Video
00:05:44

Query - Switch with Numerical Value Comparison

ZIP

Information Function

Data For Information Functions

ZIP

Analyze Column Statistics

Video
00:03:50

Query - COLUMNSTATISTICS

ZIP

Contains

Video
00:06:54

Query - CONTAINS()

ZIP

Contains ROW

Video
00:01:41

Query - CONTAINSROW

ZIP

Contains String

Video
00:06:00

Query - CONTAINSSTRING() & CONTAINSSTRINGEXACT()

ZIP

Filter and Slicer Simulation

Video
00:11:47

Query - Filter and Slicer Simulation

ZIP

Has One Filter

Video
00:09:07

Query - HASONEFILTER

ZIP

Has One Value

Video
00:01:27

Query - HASONEVALUE

ZIP

Check the Column has Applied Filters

Video
00:04:00

Query - ISFILTERED

ZIP

Check the Table Filtered by Other Tabular Column

Video
00:04:06

Query - ISCROSSFILTERED

ZIP

Text and Non-Text Values

Video
00:02:13

Query - ISTEXT() and ISNONTEXT()

ZIP

Number, Odd or Even

Video
00:03:10

Query - ISNUMBER, ISODD, ISEVEN

ZIP

Find Missing Values

Video
00:02:29

Query - ISBLANK

ZIP

Find Error Values

Video
00:02:13

Query - ISERROR

ZIP

Find out Logical Values

Video
00:01:29

Query - ISLOGICAL

ZIP

Find Empty Tables

Video
00:01:10

Query - ISEMPTY

ZIP

Find sub total rows

Video
00:03:09

Query - ISSUBTOTAL

ZIP

Find the scope of hierachy w.r.t rows

Video
00:03:50

Query - ISINSCOPE

ZIP

Math & Trig Functions

Data For Practice

ZIP

Division and Modulus

Video
00:03:15

Query - Divide and Modulus

ZIP

Ceiling and Floor

Video
00:02:43

Query - Ceiling and Floor

ZIP

Rounding

Video
00:03:21

Query - Rounding

ZIP

Rounding Up and Down

Video
00:01:59

Query - Rounding Up and Down

ZIP

Truncate

Video
00:01:13

Query - Truncate

ZIP

Rounding to Even

Video
00:01:02

Query - Rounding to Even

ZIP

Power

Video
00:01:28

Query - Power

ZIP

Square Root

Video
00:00:32

Query - SQRT

ZIP

Exponential Growth

Video
00:00:43

Query - Exponential Growth

ZIP

Sign and Absolute Value

Video
00:01:13

Query - Sign and Absolute Value

ZIP

Factorial

Video
00:01:16

Query - Factorial

ZIP

GCD & LCM

Video
00:01:57

Query - GCD & LCM

ZIP

Logarithm

Video
00:01:12

Query - Logarithm

ZIP

Text Functions

Data For Practice - Text Functions

ZIP

Concatenate and Combine Values

Video
00:08:24

Query - Concatenate and Combine Values

ZIP

ConcatenateX

Video
00:02:19

Query - CONCATENATEX

ZIP

Exact Comparison

Video
00:02:44

Query - EXACT

ZIP

Find and Search

Video
00:03:47

Query - Find and Search

ZIP

Fixed

Video
00:02:42

Query - FIXED

ZIP

Formatting Text

Video
00:06:37

Query - FORMAT

ZIP

VALUE

Video
00:02:36

Query - VALUE

ZIP

Left, Mid and Right Split

Video
00:03:11

Query - LEFT, MID and RIGHT

ZIP

Length of Text

Video
00:00:51

Query - LENGTH

ZIP

Trimming White Spaces on Prefix and Suffix

Video
00:03:04

Query - TRIM

ZIP

Replace and Substitute

Video
00:03:53

Query - REPLACE and SUBSTITUTE

ZIP

Upper and Lower Case Conversion

Video
00:01:14

Query - UPPER and LOWER

ZIP

Repeat Text

Video
00:01:08

Query - REPT

ZIP

Date & Time Functions

Practice Data for Date Time Functions

ZIP

Date and Time

Video
00:02:19

Query - DATE and TIME

ZIP

Calendar

Video
00:02:25

Query - Calendar

ZIP

Calendar Auto

Video
00:03:52

Query - Calendar Auto

ZIP

Date Difference

Video
00:03:03

Query - Date Difference

ZIP

Date Value

Video
00:01:17

Query - Date Value

ZIP

Date Extraction

Video
00:02:25

Query - Date Extraction

ZIP

EDate and EOMonth

Video
00:02:22

Query - EDate and EOMonth

ZIP

Total Working Days

Video
00:04:15

Query - NETWORKDAYS

ZIP

Current Values

Video
00:01:41

Query - Current Date and Time

ZIP

Week Day

Video
00:02:07

Query - Weekday

ZIP

Time Intelligence Functions

Data For Practice - Time Intelligence

ZIP

DateTable for Time Intelligence

Video
00:06:01

Query - DateTable for Time Intelligence

ZIP

Closing and Opening Balance of the Month

Video
00:07:02

Query - Closing and Opening Balance of the Month

ZIP

Closing and Opening Balance of the Quarter

Video
00:02:31

Query - Closing and Opening Balance of Quarter

ZIP

Closing and Opening Balance of the Year

Video
00:05:00

Query - Closing and Opening Balance of the Year

ZIP

Dates Between Two Given Dates

Video
00:01:47

Query - Dates Between

ZIP

Dates From a Given Date and A Period

Video
00:02:10

Query - DATESINPERIOD

ZIP

Shifting Dates Forward and Backward

Video
00:09:13

Query - DATESADD

ZIP

Start and End of Month

Video
00:03:37

Query - Start and End of Month

ZIP

Start and End of Quarter

Video
00:02:38

Query - Start and End of the Quarter

ZIP

Start and End of the Year

Video
00:02:35

Query - Start and End of the Year

ZIP

First and Last Date

Video
00:01:10

Query - First and Last Date

ZIP

Previous and Next

Video
00:06:03

Query - Previous and Next

ZIP

Same Period and Last Year

Video
00:02:06

Query - Same Period Last Year

ZIP

Parent & Child Functions

Practice Data

ZIP

Path

Video
00:02:15

Query - PATH

ZIP

Path Length

Video
00:01:25

Query - Path Length

ZIP

Path Item and Path Reverse Item

Video
00:03:27

Query - PATHITEM, PATHREVERSEITEM

ZIP

Path Contains

Video
00:01:26

Query - Path Contains

ZIP

Relationship Functions

Data for Practice - Relationship Functions

ZIP

Cross Filter

Video
00:07:41

Query - Cross Filter

ZIP

Cross Filter - OneWay Vs Both

Video
00:05:22

Query - ONEWAY, BOTH

ZIP

Related Column Values

Video
00:01:40

Query - RELATED

ZIP

Related Table Values

Video
00:04:36

Query - RELATED TABLE

ZIP

Use Relationship

Video
00:06:17

Query - Use Relationship

ZIP

Filter Functions

Data for Practice - Filter Functions

ZIP

Calculate

Video
00:03:50

Query - CALCULATE

ZIP

Treat As

Video
00:02:33

Query - TREATAS

ZIP

Calculate Table

Video
00:01:48

Query - CALCULATETABLE

ZIP

All Values From the Column or Table

Video
00:11:58

Query - ALL

ZIP

All Values Ignoring Cross Filters

Video
00:07:42

QUERY - ALLCROSSFILTERED

ZIP

All Except

Video
00:06:57

Query - ALLEXCEPT

ZIP

All Selected

Video
00:10:35

Query - ALLSELECTED

ZIP

All but No Blank Rows

Video
00:03:43

Query - ALLNOBLANKROWS

ZIP

Earlier

Video
00:07:57

Query - EARLIER / EARLIEST

ZIP

Filter Rows

Video
00:02:08

Query - FILTER

ZIP

Keep and Remove Filters

Video
00:07:14

Query - KEEPFILTERS, REMOVEFITLERS

ZIP

Lookup Value

Video
00:01:57

Query - LOOKUPVALUE

ZIP

Window Functions

Data For Practice - Window Functions

ZIP

Index

Video
00:08:52

Query - INDEX | ORDERBY | PARTITIONBY

ZIP

Offset

Video
00:05:12

Query - OFFSET | ORDERBY | PARTITIONBY

ZIP

Window

Video
00:06:17

Query - WINDOW | ORDERBY | PARTITIONBY

ZIP

Rank

Video
00:03:08

Query - RANK

ZIP

Acknowledgment Form

Acknowledgment Form

External Link

Industry-Recognized Certificate!

Boost your career with a certification that validates your expertise in Business Analysis, Power BI, and SQL

Upon course completion, you'll receive a verifiable certificate to showcase your skills and enhance your job opportunities


Real-Time Technical Support

Experience seamless technical support like never before with our dedicated Discord platform

Connect directly with trainer, fellow learners, and industry experts in real-time.

PLACEMENT TRAINING

Discover How IT WorkS

PORTFOLIO

We guide you through creating a strong portfolio by building real-world projects, enhancing your LinkedIn profile, and writing insightful blogs, enabling you to confidently showcase your data analysis and modeling skills to potential employers.

RESUME

We assist you in crafting a compelling Business Analyst-focused resume that highlights your technical expertise, relevant skills, and achievements, making you stand out to hiring managers in the business analyst field.

PARTNERED JOBS

We connect you with job opportunities through our industry partnerships, providing access to top companies seeking professionals skilled in Power BI & SQL, and help you get noticed in the competitive job market.

CODING ROUND

We help you prepare for SQL coding rounds by providing practice exercises and real-world SQL problems, ensuring you're ready to tackle any technical challenge with efficiency and accuracy.

TECHNICAL ROUND

We simulate technical face-to-face interviews, coaching you on how to demonstrate your Business Analyst knowledge, solve problems on the spot, and effectively communicate your skills to interviewers

HR ROUND

We prepare you for the final HR interview by coaching you on how to present yourself, discuss your career goals, and highlight how your SQL & Power BI expertise adds value to potential employers

Start Your Business Analyst Career!

Gain hands-on expertise in Business Analysis, from data extraction to visualization, using Power BI & SQL

Learn in Tamil, get Lifetime support, and apply your skills to real-world projects. 

Enroll now and take your career to the next level!

Frequently asked questions

Got questions? We’ve got answers! Find everything you need to know about the course structure, support, certification, and learning experience below. If you need more help, feel free to reach out anytime!

Who is this course for?

This course is ideal for aspiring Business Analysts, working professionals, and anyone looking to build expertise in Power BI, SQL, and data analysis.

Do I need prior experience?

No prior experience is required! We start from the basics and gradually move to advanced concepts.

Is this course available in English?

No! The entire course, including video lessons and support, is provided in Tamil for easy understanding.

How can I get support if I have doubts?

You can ask questions anytime through our Technical Support Channel via text, screen share, or voice chat.

Will I receive a certificate?

Yes! Upon course completion, you'll receive a certificate to showcase your skills.

What tools will I learn in this course?

You'll master Power BI, SQL, and essential Business Analyst techniques used in real-world projects.

Can I access the course at my own pace?

Absolutely! You get lifetime access to the course, so you can learn at your convenience.