How to Deploy a Full-Stack Web Application on a Cloud Server (Step-by-Step) How to Deploy a Full-Stack Web Application on a Cloud Server (Step-by-Step) Keywords: cloud server and application, deploy full-stack app, cloud deployment tutorial Deploying a full-stack web application on a cloud server might seem intimidating, but with the right guidance, it’s simpler than you think. Whether you're building with Node.js, React, or Python, this guide will help you move from development to production step-by-step. 🚀 Step 1: Choose a Cloud Server Provider Popular cloud hosting providers include: Amazon EC2 Google Cloud Compute Engine DigitalOcean Microsoft Azure For this guide, we’ll use Ubuntu 22.04 LTS on DigitalOcean Droplets . 🔐 Step 2: SSH into Your Cloud Server ssh root@your_server_ip Make sure you have your SSH key or password set up. You can generate a key using: ssh...
1. Q: What is SQL?
A: SQL stands for Structured Query Language, and it is a programming language used to manage and manipulate relational databases.
2. Q: What is a primary key in SQL?
A: A primary key is a unique identifier for each record in a table. It enforces data integrity and ensures that each record has a unique identifiying value.
3. Q: What is a foreign key in SQL?
A: A foreign key is a field that establishes a link between two tables. It creates a relationship between tables based on a common column, allowing referencing data from one table to another.
4. Q: What is the difference between DELETE and TRUNCATE in SQL?
A: DELETE is a DML (Data Manipulation Language) statement used to remove specific rows from a table, while TRUNCATE is a DDL (Data Definition Language) statement used to remove all the rows from a table, effectively truncating the table.
5. Q: What is a JOIN in SQL?
A: JOIN is used to combine rows from two or more tables based on a related column between them. It allows retrieving data that is spread across multiple tables by specifying the columns to match between them.
6. Q: What is the difference between INNER JOIN and OUTER JOIN?
A: INNER JOIN retrieves only the rows from both tables that have matching values in the specified column, while OUTER JOIN retrieves all the rows from one table and the matching rows from another table.
7. Q: What is the purpose of the SELECT statement in SQL?
A: SELECT is used to retrieve data from one or more tables. It allows specifying which columns to retrieve and can also include filtering criteria using the WHERE clause.
8. Q: What is the difference between WHERE and HAVING in SQL?
A: WHERE is used to filter rows based on specific conditions before the data is grouped, while HAVING is used to filter rows based on conditions after the data is grouped using the GROUP BY clause.
9. Q: What is the role of the ORDER BY clause in SQL?
A: ORDER BY is used to sort the result set in ascending or descending order based on one or more columns. It is typically used at the end of a query to control the presentation of the data.
10. Q: What are the different types of SQL constraints?
A: Some common SQL constraints include:
- Primary Key
- Foreign Key
- Unique
- Not Null
- Check
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