Journey To Database World: Part 12 (Database Internals)

Other Parts of This Series: Part 11: Journey To Database World: Part 11 (Knowledge Should Have According to Role) Database Internals (Photo Credit: LinkedIn Image) Database internals refer to how a database system works behind the scenes. Like how it stores data in memory and on disk, how it manages updates and deletions, and how it retrieves data efficiently. So as you can imagine, it is a huge topic and a vast area to discuss. But before starting, I want to set the expectation level. In this article, I just touch on the concepts in a summary style and do not go into details to keep it short. If you feel really interested, then you can search each topic and learn the details. Also, you can deep dive into the further learning section given at the end of this article. So let’s get started… ...

February 7, 2026 Â· 7 min Â· Saiful Islam Rasel

Journey To Database World: Part 11 (Knowledge Should Have According to Role)

Other Parts of This Series: Part 10: Journey To Database World: Part 10 (Vector Database - Qdrant As Example) Part 12: Journey To Database World: Part 12 (Database Internals) Database Role Wise Knowledge (Photo Credit: LinkedIn Image) Here, I’m trying to identify the roles at a low level. Roles and responsibilities may vary based on the needs of the company and the area. Let’s get started… ...

February 6, 2026 Â· 4 min Â· Saiful Islam Rasel

Journey To Database World: Part 10 (Vector Database - Qdrant As Example)

Other Parts of This Series: Part 9: Journey To Database World: Part 9 (Graph Database - Neo4j As Example) Part 11: Journey To Database World: Part 11 (Knowledge Should Have According to Role) Vector Database - Qdrant (Photo Credit: LinkedIn Image) Story: In a university, there was a magical library called The Vector Vault. Instead of books, it stored colorful stars that captured the essence of each book, like its meaning or feel. ...

February 5, 2026 Â· 6 min Â· Saiful Islam Rasel

Journey To Database World: Part 9 (Graph Database - Neo4j As Example)

Other Parts of This Series: Part 8: Journey To Database World: Part 8 (Column Family Database - Cassandra As Example) Part 10: Journey To Database World: Part 10 (Vector Database - Qdrant As Example) Graph Database - Neo4j (Photo Credit: LinkedIn Image) Story: In a magical city called GraphLand, everything is connected in unique and meaningful ways. The city is home to people, places, and things, each playing a special role of relationships that define life there. ...

February 4, 2026 Â· 5 min Â· Saiful Islam Rasel

Journey To Database World: Part 8 (Column Family Database - Cassandra As Example)

Other Parts of This Series: Part 7: Journey To Database World: Part 7 (Document Database - MongoDB As Example) Part 9: Journey To Database World: Part 9 (Graph Database - Neo4j As Example) Column Family Database - Cassandra (Photo Credit: LinkedIn Image) Story: Imagine a flexible library where each bookshelf (column family) represents a category of data, such as “Science” or “History.” Within each bookshelf, books (rows) contain unique chapters (columns), and not all books need to have the same chapters. Each book has a unique ID (row key), making it easy to locate on the shelf. So if you only want to read about “Physics,” you can go directly to the “Science” bookshelf and the specific book without flipping through everything else. ...

February 3, 2026 Â· 7 min Â· Saiful Islam Rasel

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