3. Mongodb

  • 3.1. MongoDB tutorial

    MongoDB is a database based on distributed file storage. Written in C++ language. Designed to provide scalable high-perfo...
    2025-10-25 13:34:22 UTC
  • 3.2. Introduction to NoSQL

    NoSQL (NoSQL = Not Only SQL), which means “not just SQL”. In modern computing systems, a huge amount of data is generated ...
    2025-10-25 13:34:20 UTC
  • 3.3. What is MongoDB?

    MongoDB is written in C++ language and is an open source database system based on distributed file storage. In the case of...
    2025-10-25 13:34:21 UTC
  • 3.4. Install MongoDB on Windows platform

    3.4.1. MongoDB download ¶ MongoDB provides precompiled binaries for 32-bit and 64-bit systems. You can download and i...
    2025-10-25 13:34:25 UTC
  • 3.5. Install MongoDB on Linux platform

    MongoDB provides 64-bit installation packages for all linux distributions, which you can download from the official website....
    2025-10-25 13:34:23 UTC
  • 3.6. Install MongoDB on Mac OSX platform

    MongoDB provides a 64-bit installation package on the OSX platform, which you can download from the official website. Down...
    2025-10-25 13:34:24 UTC
  • 3.7. Concept Analysis of MongoDB

    No matter what database we study, we should learn the basic concepts. The basic concepts in mongodb are documents, collectio...
    2025-10-25 13:34:21 UTC
  • 3.8. MongoDB-connection

    In this tutorial we will discuss the different ways to connect to MongoDB. 3.8.1. Start the MongoDB service ¶ In th...
    2025-10-25 13:34:21 UTC
  • 3.9. MongoDB creates a database

    3.9.1. Grammar ¶ The syntax format for MongoDB to create a database is as follows: use DATABASE_NAME If the da...
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  • 3.10. MongoDB deletes the database

    3.10.1. Grammar ¶ The syntax format for MongoDB to delete a database is as follows: db.dropDatabase() Delete t...
    2025-10-25 13:34:20 UTC
  • 3.11. MongoDB creates a collection

    In this section, we show you how to use MongoDB to create collections. Used in MongoDB createCollection() Method to crea...
    2025-10-25 13:34:24 UTC
  • 3.12. MongoDB delete collection

    In this section, we show you how to use MongoDB to delete collections. Used in MongoDB drop() Method to delete the col...
    2025-10-25 13:34:25 UTC
  • 3.13. MongoDB inserts a document

    In this section, we will show you how to insert data into a collection of MongoDB. The data structure of the document is b...
    2025-10-25 13:34:22 UTC
  • 3.14. MongoDB updates the document

    MongoDB usage update() And save() Method to update the documents in the collection. Next, let’s take a detailed look at ...
    2025-10-25 13:34:24 UTC
  • 3.15. MongoDB deletes a document

    In the previous chapters, we have learned how to add and update data for collections in MongoDB. In this section we will con...
    2025-10-25 13:34:23 UTC
  • 3.16. MongoDB query document

    MongoDB query document usage find() Method. find() Method to display all documents in an unstructured way. 3.1...
    2025-10-25 13:34:23 UTC

Principles, Technologies, and Methods of Geographic Information Systems

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In recent years, Geographic Information Systems (GIS) have undergone rapid development in both theoretical and practical dimensions. GIS has been widely applied for modeling and decision-making support across various fields such as urban management, regional planning, and environmental remediation, establishing geographic information as a vital component of the information era. The introduction of the “Digital Earth” concept has further accelerated the advancement of GIS, which serves as its technical foundation. Concurrently, scholars have been dedicated to theoretical research in areas like spatial cognition, spatial data uncertainty, and the formalization of spatial relationships. This reflects the dual nature of GIS as both an applied technology and an academic discipline, with the two aspects forming a mutually reinforcing cycle of progress.