MongoDB is a distributed database at its core, so high availability, horizontal scaling, and geographic distribution are built in and easy to use. It stores data in flexible, JSON-like, meaning fields can vary from document to document and over the time the data structure can change. MongoDB is a non-relational database that stores data in collections. () Is a **free and open-source cross-platform document-oriented database program** and is developed by MongoDB Inc. **High-level query language**: Databases have a language in which we can ask them questions to get the data in whichever way we may need it. **Data abstractions**: We can store data using complex data types that make it easy for us to save data without worrying about the underlying details of the implementation. **Concurrency**: We can have many clients connected to our database (program) simultaneously **Scalability**: As our demands to get more and more data increases, databases also make it easy to increase our infrastructure capacity **Efficiency**: We could just use files to store the data, but this solution will be slow for any serious program. **Reliability**: Data can always be accessed In addition to persistence, database systems provide a number of other properties that make them exceptionally useful and convenient: In this lesson, we will learn how Databases can help us fix that problem!ĭatabases are typically ((computer_science)), which means that even if our program stops/restarts, we can still access the data. Until now, every program that we wrote will reset/refresh every time we run it (variables will lose its value). () are **programs that allow us to save and retrieve data** to our applications. Create your first Database, Collections, and Documents MongoDB Compass: Install, connect to MongoDB MongoDB Server: Install, configure, launch/stop Explain what Databases are and why we need them
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