Featured • Security
PHP security update: patch the October RCE bugs
PHP 8.5.12, 8.4.27, 8.3.36, and 8.2.35 fix two critical remote code execution bugs from 21 October 2026. Here is who is exposed and how to update.
Schoolabe Blog
Insights, tutorials, and tips for developers.
Tutorials
10 Most Important Data Structures in Programming Every Developer Should Know
Discover what data structures in programming are and learn the most important data structures that form the foundation of efficient algorithms and better code.
Schoolabe • 10/1/2025
Tutorials
What is a Data Structure in Programming?
What a data structure is, why it matters for performance, and how common structures (arrays, lists, trees, graphs, hash tables) fit different access patterns.
Schoolabe • 1/27/2025
Tutorials
Adding Column in SQL: Complete Guide to ALTER TABLE ADD COLUMN
Learn how to add a column in SQL using ALTER TABLE. Complete guide with examples for MySQL, PostgreSQL, SQL Server, and Oracle, including constraints and best practices.
Schoolabe • 1/26/2025
Tutorials
SQL WHERE IS NOT NULL: Complete Guide to Filtering NULL Values
Learn how to use SQL WHERE IS NOT NULL to filter out NULL values. Complete guide with examples, best practices, and common use cases.
Schoolabe • 1/25/2025
Tutorials
How to Clear Git Stash: Complete Guide to Managing Git Stash
Learn how to clear git stash, view stash entries, apply and drop stashes, and manage your Git stash effectively with practical examples.
Schoolabe • 1/24/2025
Tutorials
Is Udemy Courses Worth It? Complete Honest Review 2025
Is Udemy courses worth it? Get an honest review covering pricing, course quality, alternatives, and whether Udemy is the right learning platform for you.
Schoolabe • 1/23/2025
Tutorials
SQL Query Descending Order: Complete Guide to ORDER BY DESC
Learn how to use SQL query descending order with ORDER BY DESC. Complete guide with examples, multiple columns, NULL handling, and best practices.
Schoolabe • 1/22/2025
Tutorials
HTML for Web Development: Complete Beginner Guide to Building Websites
Master HTML for web development with this comprehensive guide. Learn HTML fundamentals, semantic elements, forms, and best practices for modern web development.
Schoolabe • 1/20/2025
Tutorials
Best Udemy Courses for Data Science: Top-Rated Courses to Master Data Science in 2025
Discover the best Udemy courses for data science, including Python, machine learning, statistics, and data analysis. Comprehensive reviews and recommendations for beginners to advanced learners.
Schoolabe • 1/19/2025
Tutorials
How to Insert Multiple Rows in Excel: Complete Guide with Methods and Shortcuts
Learn how to insert multiple rows in Excel using various methods including keyboard shortcuts, right-click menu, and formulas. Step-by-step guide for all Excel versions.
Schoolabe • 1/16/2025
Tutorials
What Uniquely Identifies Each Row in a Table: Understanding Primary Keys and Unique Identifiers
Learn what uniquely identifies each row in a table, including primary keys, unique constraints, and composite keys in database design.
Schoolabe • 1/15/2025
Tutorials
Sliding Window Technique Explained in Simple Words (With Clear Patterns)
Learn the sliding window technique with clear patterns and simple explanations. Understand when to use fixed vs variable windows, longest vs shortest patterns, and master this essential interview technique.
Schoolabe • 1/15/2025
Tutorials
CSS Grid vs Flexbox: Complete Comparison Guide for Beginners
Learn when to use CSS Grid vs Flexbox with this easy-to-understand guide. Perfect for beginners who want to master modern CSS layouts.
Rohit Srivastava • 1/8/2025
Tutorials
26 Years of Java — A Simple Journey from 1998 to 2025
From its early days in the late 90s to today, Java has introduced hundreds of changes — new features, better performance, modern syntax, and even AI-friendly improvements.
Rohit Srivastava • 1/8/2025
How to Use the Schoolabe Blog
Use category filters to focus on one learning area at a time, then save related posts into a weekly revision list. This helps you convert reading into consistent practice rather than one-time browsing.
Each article is written to support hands-on implementation. Read the concept, test the example in your own code, and summarize key takeaways in your notes to improve retention and interview recall.
For faster growth, combine one fundamentals post, one interview-focused post, and one implementation post each week. This creates balanced progress across theory, problem solving, and practical execution.