{"id":32049,"date":"2026-08-25T14:12:46","date_gmt":"2026-08-25T08:42:46","guid":{"rendered":"https:\/\/opstree.com\/blog\/?p=32049"},"modified":"2026-08-25T14:12:46","modified_gmt":"2026-08-25T08:42:46","slug":"mongodb-basics-concepts-architecture-part-1","status":"publish","type":"post","link":"https:\/\/opstree.com\/blog\/mongodb-basics-concepts-architecture-part-1\/","title":{"rendered":"MongoDB Zero to Hero: Understanding MongoDB from Scratch (Part 1)"},"content":{"rendered":"

If\u00a0you’re\u00a0starting your journey into databases,\u00a0you’ve\u00a0probably heard\u00a0names like\u00a0<\/span>MySQL<\/span><\/b>,\u00a0<\/span>PostgreSQL <\/span><\/b><\/a>and <\/span>MongoDB<\/span><\/b>. While all of them help store data, they work in\u00a0different ways.<\/span>\u00a0<\/span><\/p>\n

In this article, we’ll explore what MongoDB is, how it differs from traditional SQL databases and <\/span>why <\/span>it’s <\/span>one of the most popular databases for modern applications.<\/span>\u00a0<\/span><\/p>\n

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What You’ll Learn<\/h3>\n
    \n
  1. What MongoDB Is<\/li>\n
  2. SQL vs NoSQL Databases<\/li>\n
  3. Why MongoDB Was Created<\/li>\n
  4. JSON vs BSON<\/li>\n
  5. Why Developers Love MongoDB<\/li>\n
  6. Common MongoDB Use Cases<\/li>\n
  7. The _id<\/code> Field and Its Behavior<\/li>\n
  8. Basic MongoDB Architecture<\/li>\n
  9. MongoDB Server Components: mongod<\/code>, mongosh<\/code>, and mongos<\/code><\/li>\n<\/ol>\n<\/div>\n

    SQL vs NoSQL: <\/span>What’s<\/span>\u00a0the Difference?<\/span><\/h2>\n

    Before diving deeper into MongoDB,\u00a0<\/span>it’s<\/span>\u00a0important to understand the two major types of databases:\u00a0<\/span><\/span>SQL (Relational Databases)<\/span><\/span>\u00a0and\u00a0<\/span><\/span>NoSQL (Non-Relational Databases)<\/span><\/span>.<\/span><\/span>\u00a0<\/span><\/p>\n

    Both are used to store and manage data, but they differ in how they organize, store, and retrieve information.<\/span><\/span>\u00a0<\/span><\/p>\n

    What is a SQL Database?<\/span><\/span>\u00a0<\/span><\/h3>\n

    A\u00a0<\/span><\/span>SQL (Structured Query Language)<\/span><\/span>\u00a0database stores data in\u00a0<\/span><\/span>tables<\/span><\/span>\u00a0made up of rows and columns. Each table has a predefined structure, known as a\u00a0<\/span><\/span>schema<\/span><\/span>, which defines what type of data each column can store.<\/span><\/span>\u00a0<\/span><\/p>\n

    Popular SQL databases include:<\/span>\u00a0<\/span><\/p>\n