Tech Series
Comprehensive, multi-part guides exploring concepts in depth.
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- Data Structures & AlgorithmsSeries · Part 2 of 2
5 Basic Array Problems in JavaScript: Largest, Second Largest, Smallest & Sorted Check
Five beginner array problems solved in JavaScript, each with a brute-force and a better approach — Part 2 of the Data Structures & Algorithms series.
Himanshu Bhatt · 2 min read · Oct 7, 2026
- DBMSSeries · Part 6 of 6
Converting an ER Diagram to Tables: The Complete Rules
A step-by-step guide to reducing an ER diagram to relational tables: strong entities, composite and multi-valued attributes, every cardinality ratio, participation constraints, and weak entity sets — each rule shown as an ER-to-table conversion diagram.
Himanshu Bhatt · 7 min read · Oct 2, 2026
- DBMSSeries · Part 5 of 6
Attributes in an ER Diagram: The 6 Types Explained
Attributes are the properties that describe an entity. Learn the six types of attributes in an ER diagram — simple, composite, single-valued, multi-valued, derived, and key — with the exact Chen notation and clear Student examples.
Himanshu Bhatt · 3 min read · Oct 2, 2026
- DBMSSeries · Part 4 of 6
Participation Constraints in DBMS: Total vs Partial
A participation constraint sets the minimum number of relationships an entity must take part in. Learn total vs partial participation, how they map to minimum cardinality, and how to read them in an ER diagram.
Himanshu Bhatt · 2 min read · Oct 1, 2026
- DBMSSeries · Part 3 of 6
Cardinality Constraints in DBMS: One-to-One, One-to-Many, and Many-to-Many
A cardinality constraint sets the maximum number of entities that can take part in a relationship. Here are the four types — 1:1, 1:N, M:1, and M:N — each with a diagram and a real example.
Himanshu Bhatt · 2 min read · Oct 1, 2026
- DevOpsSeries · Part 6 of 6
TCP vs UDP: The Internet's Two Ways to Move Data
TCP guarantees your data arrives, in order; UDP just fires it off and hopes. Here's how the two transport protocols differ, what uses each, and why it changes the way you debug.
Himanshu Bhatt · 4 min read · Oct 1, 2026
- DevOpsSeries · Part 5 of 6
The TCP/IP Model: How Data Really Flows on the Internet
The OSI model teaches the theory; the TCP/IP model is what the internet actually runs on. The same data flow in 4 layers, how they map to OSI’s 7, and the same encapsulation example.
Himanshu Bhatt · 2 min read · Sep 30, 2026
- DevOpsSeries · Part 4 of 6
How Data Flows Across the Internet: The OSI Model, Layer by Layer
Follow one message from machine to machine across the internet. The 7 OSI layers, what each one does, and exactly what header gets added (encapsulation) and removed (decapsulation) at every layer.
Himanshu Bhatt · 3 min read · Sep 30, 2026
- DevOpsSeries · Part 3 of 6
IP Addresses and Ports: Public vs Private, NAT, and localhost
An IP identifies a machine; a port identifies an app on it. Public vs private IPs, NAT, common ports, and why localhost vs 0.0.0.0 decides if your cloud server is reachable.
Himanshu Bhatt · 4 min read · Sep 30, 2026
- DevOpsSeries · Part 2 of 6
How the Internet Actually Works: From Browser to Server
You type a URL and press Enter. Follow that single request through DNS, ports, the TCP handshake, TLS, and HTTP — all the way to the server and back.
Himanshu Bhatt · 3 min read · Sep 29, 2026
- DevOpsSeries · Part 1 of 6
Basic Networking for DevOps: Terms, Tools, and Debugging
Every connection is three boxes — client, network, server. Learn DNS, IPs and ports, TCP vs UDP, and the dig → ping → nc → curl order you use to debug them.
Himanshu Bhatt · 4 min read · Sep 29, 2026
- Data Structures & AlgorithmsSeries · Part 1 of 2
Pattern Printing Problems in JavaScript: 6 Star & Number Patterns Explained
Six classic star and number pattern problems, solved in JavaScript — Part 1 of the Data Structures & Algorithms series.
Himanshu Bhatt · 1 min read · Sep 27, 2026
