Dashboard Library Review2134 Progress Certificates

Computer Science Foundations

Programming Languages

JavaScript Fundamentals0/24

Core CS Theory

Data structures & algorithms0/23

OOP & design patterns0/23

Functional Programming Concepts0/20

Operating Systems Fundamentals0/20

Engineering Practice

Software Engineering Fundamentals0/20

Networking Fundamentals0/20

Linux & the Command Line0/20

Frontend Engineering

React & Next.js0/18

CSS & Modern Styling0/18

UI/UX for Developers0/12

Mobile Development0/12

Backend Engineering

Core Backend

Node.js & Backend JavaScript0/18

Databases & SQL0/16

Engineering Practice

Git & Version Control0/14

Testing & QA0/18

Security

Cryptography Fundamentals0/12

Auth, Authorization & Multi-Tenancy0/17

Web Security Fundamentals0/18

Application Security & Secure Coding0/12

Cloud, Infrastructure & DevOps

Cloud Platforms

Cloud Computing & Infrastructure0/19

Containers & Orchestration

Docker & Containers0/12

Delivery & Operations

CI/CD & Deployment Pipelines0/12

Observability & Monitoring0/12

Deployment Platforms

Domain Names, DNS & Subdomains0/12

Systems & Architecture

System design & architecture0/18

Distributed Systems Fundamentals0/12

Message Queues & Event-Driven Architecture0/12

Caching Strategies0/12

AI & Machine Learning

AI & ML Fundamentals0/12

AI Agents & LLM Integration0/17

Platform & Product Integrations

WhatsApp & Meta Platform Integrations0/19

Payments & Financial Systems0/12

Process, Career & Delivery

Agile & Project Management0/14

Interviewing & Career Growth0/12

Built by Mohamed Salem

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Dashboard Library Review2134 Progress Certs

Databases & SQL

The actual language of relational data — queries, joins, and the practical skills behind working with SQL day to day, not just the system-design trade-offs.

16 lessons

Study 65 cards for this domain

Beginner

Tables, rows, and your first SELECT queryBeginner4 min read·Not started INSERT, UPDATE, and DELETE — changing dataBeginner4 min read·Not started JOINs — combining data across tablesBeginner4 min read·Not started Aggregation — COUNT, SUM, AVG, and GROUP BYBeginner4 min read·Not started Constraints — letting the database enforce correctnessBeginner4 min read·Not started NULL and three-valued logicBeginner4 min read·Not started String and date functions, and CASE expressionsBeginner4 min read·Not started

Intermediate

Transactions and ACID, in practiceIntermediate4 min read·Not started Subqueries — a query inside a queryIntermediate4 min read·Not started Common Table Expressions — naming a subqueryIntermediate4 min read·Not started Set operations — UNION, INTERSECT, and EXCEPTIntermediate4 min read·Not started Normalization — designing a schema that doesn't corrupt itselfIntermediate5 min read·Not started Views — saving a query under a nameIntermediate4 min read·Not started

Advanced

Window functions — aggregating without collapsing rowsAdvanced4 min read·Not started Indexes from the query side — EXPLAIN and query plansAdvanced4 min read·Not started Locking and concurrency controlAdvanced5 min read·Not started