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Introduction to Databases

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This note is complete, reviewed, and considered stable.

Databases are the backbone of modern applications, they're structured repositories for storing, retrieving, and managing data efficiently. Whether we're building a simple blog or a complex enterprise system, understanding databases is crucial.

SQL​

SQL section focuses on the following topics:

  • SQL syntax and grammar fundamentals
  • Data definition and manipulation operations
  • Advanced querying techniques (joins, subqueries, window functions)
  • Database design principles and normalization
  • Performance tuning and best practices

Database Engineering​

This section focuses on the practical aspects of working with databases in real-world scenarios, here are the list of topics covered:

  • Choose the right database for our project
  • Configure and optimize database performance
  • Implement security best practices
  • Handle scaling and high availability
  • Work with popular database systems like PostgreSQL, MySQL, MongoDB, and more

Database Systems​

We're diving into the theoretical foundations and internal workings of database management systems. This covers:

  • Database architecture and components
  • Storage engines and indexing strategies
  • Various Data Strcutures used on database systems
  • Transaction management and concurrency control
  • Query processing and optimization techniques
  • Distributed database concepts