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Data Science

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Certificate (Data Science)

[2026] SQLD Part1: Pass on Your First Try Even as a Non-Major

SQLD, where do I even start? A course for those who feel completely lost - you'll meet a transformed version of yourself after completing it. SQLD All-in-One Pass!

(4.7) 10 reviews

83 learners

Level Basic

Course period 12 months

SQL
SQL
Big Data
Big Data
Oracle
Oracle
erwin
erwin
SQLD
SQLD
SQL
SQL
Big Data
Big Data
Oracle
Oracle
erwin
erwin
SQLD
SQLD

Reviews from Early Learners

4.7

5.0

desunny

15% enrolled

I am enjoying the lecture. I think the textbook is well explained and will be very helpful in my studies. I will listen to the lecture and read the textbook carefully. :)

5.0

Betterlife

25% enrolled

Thank you for explaining everything in detail. It was much easier to understand because I was able to practice modeling. I will listen to the lecture carefully and I really want to pass. ^^

5.0

흔들거북이

100% enrolled

Thank you for the great listening experience.

What you will gain after the course

  • Understanding Data Modeling - Entity, Attribute, Relationship, Identifier

  • ERWIN Database Modeling Practice

  • Data Models and SQL - Normalization, Relationships and Joins, Transactions, Null Attributes, Identifiers

  • Practice solving past exam questions

Slide 960 Px-1

Perfect fit for the 2026 revised exam!

SQLD Part1 that even beginners and non-majors can pass in one try!


SQLD - Part1. Understanding Data Modeling

This course is perfectly tailored for the revised 2026 exam. It provides an easy and fast path to obtaining the SQLD certification.


The SQLD certification is a nationally recognized credential that validates professional knowledge in deeply understanding the core principles of SQL and skillfully applying them in practical work. This course systematically covers essential core theory for passing and actual exam problem-solving and practice, designed so that even beginners can learn effectively.

✅ Why You Should Choose This Course:

  • Free SQLD Study Materials Provided: Complimentary exam preparation materials with comprehensive explanations and practice problems (Oracle RDBMS-based)

  • Balance of Theory and Practice: Enhanced learning comprehension through data modeling practice + Practice software (erwin) provided

  • Practice Problem Solving: Perfect preparation for passing the exam!

The SQLD certification is your first step toward becoming a data & big data professional.
Take on the challenge now! 🚀

Algo App Banner- 복사본 (1)

Click the image! You can download the app.

Scan the QR code and solve problems on the mobile app.

Verify your course review and receive a 100% free coupon.

Try our unrestricted mobile environment. Solve plenty of problems to pass.

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Clicking the image will also navigate the screen. Verify your review and receive a free mobile app coupon.

Your choice leads to success! Choose SQLD All-in-One Pass lectures by part.

Slide 960 Px

All-in-One

Slide 960 Px-2

Part2. SQL Basics and Applications

Slide 960 Px-3

Noraengi Practice Problem Solving

This course has these features!

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Textbook with comprehensive explanations

We provide textbooks with comprehensive explanations, not summarized PowerPoints.

Slide 960 Px-2

Data Modeling Practice

ERD appears in SQLD! It's directly connected to understanding SQL. You can enhance your understanding through modeling practice.

Slide 960 Px-1

Problems and past exam solutions provided by topic and chapter

Certification exams are all about practice problems🚀 Review what you've learned by solving the problems included in the textbook.

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Organize at a glance, remember easily! Mind map provided

Neatly organize what you've learned so far and upgrade your skills to the next level!

  • Core lectures and detailed textbooks that even SQL beginners can fully understand and learn from

  • Hands-on lectures and software provided to help you create data models, which are the foundation of SQL writing

  • Provides theory questions by topic and chapter to help you organize what you've learned while solving problems

  • The shortcut to passing! Provides lectures and materials on solving actual past exam questions

  • Provides mind maps that allow you to organize at a glance and remember easily

Learning Content

  • Learn the core concepts of data modeling.

  • You can internalize data modeling through hands-on practice.

  • Learn the relationship between data models and SQL to master the basics of SQL writing.

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Section (1) Understanding Data Models

SQLD Part1 > Chapter1

Understanding data models, entities, attributes, relationships, and identifiers

  • Essential content for improving SQL understanding

  • Provides ample explanations and concept review questions

Section (2) Data Models and SQL

SQLD Part1 > Chapter2

Normalization, Relationships & Joins, Models and Transactions, Null Attributes, Identifiers

  • In-depth lecture on understanding data models and concept review questions

  • Acquiring data modeling skills through hands-on practice

Slide 960 Px-8
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Section (3) Past Exam Questions and Key Summary

Organize your learning content with past exam questions and mind maps.

  • Key Past Exam Problem Solutions

  • Mind Map Summary

Notes Before Taking the Course

  • This is a lecture that includes ERD practice.

  • The copyright of the learning materials belongs to DataCodeLab. Unauthorized distribution is prohibited.


Practice Environment

  • Operating System and Version (OS): Windows

  • Tools Used: erwin 7.3 (15-day Trial Version)

  • PC specifications: No restrictions

Learning Materials

  • SQLD Part1 self-developed textbook (pdf), past exam solutions (pdf), mind map (html) provided

  • Self-developed textbook: Consists of theoretical explanations, topic-specific review questions, and chapter review questions

Prerequisites and Precautions

  • Suitable for SQL beginners

  • After completing the lecture, proceed with problems and practice, and repeatedly review the lecture and textbook content


  • SQLD Part2 and Nolaengi practice problem lectures are provided separately

  • The copyright of the lecture materials belongs to DataCodeLab. Unauthorized distribution is prohibited.

Recommended for
these people

Who is this course right for?

  • Those who want to improve their development capabilities by obtaining SQLD in one attempt

  • Someone who wants to pursue a career as a data scientist with an SQLD certification

  • For those who need both SQLD books and lectures

Hello
This is algolearn

Career Verified

1,192

Learners

127

Reviews

92

Answers

4.7

Rating

6

Courses

I love studying and sharing knowledge. I have extensive experience in big data and artificial intelligence.

  • 20 years of experience as a data analyst and 5 years of teaching data analysis!

  • Consulting and lecturing for corporations and public institutions in the fields of Big Data and AI

  • Author of "Big Data Analysis Engineer All-in-One" (Written and Practical Exams)

  • CEO of an AI startup

More

Curriculum

All

21 lectures ∙ (4hr 42min)

Course Materials:

Lecture resources
Published: 
Last updated: 

Reviews

All

10 reviews

4.7

10 reviews

  • desunny6762님의 프로필 이미지
    desunny6762

    Reviews 2

    ∙

    Average Rating 5.0

    5

    15% enrolled

    I am enjoying the lecture. I think the textbook is well explained and will be very helpful in my studies. I will listen to the lecture and read the textbook carefully. :)

    • algolearn
      Instructor

      I'm glad it's helping you study. Listen to the lectures well. I wish you the best of luck. Thank you.

  • archblue279783님의 프로필 이미지
    archblue279783

    Reviews 4

    ∙

    Average Rating 5.0

    5

    25% enrolled

    Thank you for explaining everything in detail. It was much easier to understand because I was able to practice modeling. I will listen to the lecture carefully and I really want to pass. ^^

    • algolearn
      Instructor

      Yes, I hope you pass. I'll be cheering for you. ^^

  • grooveturtle290048님의 프로필 이미지
    grooveturtle290048

    Reviews 10

    ∙

    Average Rating 5.0

    5

    100% enrolled

    Thank you for the great listening experience.

    • algolearn
      Instructor

      Thank you for your review. I'm glad you enjoyed it. :) Always be happy.

  • hspark8681님의 프로필 이미지
    hspark8681

    Reviews 1

    ∙

    Average Rating 5.0

    5

    100% enrolled

    • algolearn
      Instructor

      Hello. Thank you for the positive course evaluation. I hope the lectures were helpful. The exam is just around the corner. I wish you the best of luck and will be rooting for you. Thank you.

  • onlymutalisk님의 프로필 이미지
    onlymutalisk

    Reviews 16

    ∙

    Average Rating 5.0

    5

    100% enrolled

    • algolearn
      Instructor

      Hello. Thank you for leaving a good review. The exam is not long away now. Wishing you good results. I'm rooting for you. :)

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