Dr.E.F.Codd Rules
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Dr. E. F. Codd’s 12 Rules of Relational Database Management Systems (RDBMS) Dr. Edgar F. Codd proposed these rules to define what a true Relational Database Management System should be.…
What is cyberspace?
Cyberspace is a term used to describe the virtual world created by computers, networks, and the internet—basically, all the digital environments where people interact, communicate, and share information. More simply,…
Cyber Security Material
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How to Install Firewall in Ubuntu (UFW) 🔥🛡️
Ubuntu uses UFW (Uncomplicated Firewall) to manage firewall rules easily. It helps protect the system by controlling incoming and outgoing network traffic. Step 1: Update the System Open the Terminal…
How to Install Wine in Ubuntu 🍷
Wine is a compatibility layer that allows you to run Windows applications (.exe files) on Ubuntu/Linux. Step 1: Update System First update the package list. sudo apt updatesudo apt upgrade…
Optimizing LDAP, DNS, FTP and Web Services in Ubuntu
1. Optimizing LDAP Services LDAP (Lightweight Directory Access Protocol) is used for centralized authentication and directory management. Optimization Methods: 2. Optimizing DNS Services DNS (Domain Name System) translates domain names…
🖥️ Samba Server in Linux
✅ What is Samba Server? Samba is an open-source software that allows Linux/Unix systems to share files and printers with Windows systems using the SMB/CIFS protocol. 👉 In simple words:Samba…
🔐 What is LDAP Service? what is DNS?
LDAP (Lightweight Directory Access Protocol) is a protocol used to store and manage directory information such as: An LDAP service allows systems and applications to authenticate users and retrieve directory…
🐧How to Create a Linux User Account and Set Password
Creating a user in Linux is done using terminal commands. You must have root or sudo privileges. 🟢 1️⃣ Create a New User Account 🔹 Command: sudo useradd username 📌…
🧩 What are LILO and GRUB?
LILO and GRUB are boot loaders used in Linux systems.A boot loader is a small program that loads the operating system kernel into memory when the computer starts. 1️⃣ LILO…