What are the methods of data collection?

There are many methods of data collection, one of the commonly used methods is to use web crawler tools for data collection. Octopus Collector is a web crawler tool with comprehensive functions and simple operation, which can help users quickly collect data on web pages. In addition to the Octopus Collector, there are other commonly used data collection methods, including: 1. Manual collection: manually open the web page through a browser, copy and paste the required data into Excel or other tools. 2. API interface collection: Some websites provide API interfaces, and data can be obtained by calling the interface. 3. Database collection: Obtain the required data by connecting to the database and writing SQL statements. 4. Web crawler programming: Use programming languages ????such as Python, Java, etc. to write crawler programs and obtain data by simulating browser behavior. As a professional web crawler tool, Octopus Collector is easy to use and powerful, and can help users quickly collect data on web pages. To learn more about data collection methods and techniques, you can refer to the Octopus Collector tutorial. Please go to the official website for tutorials and help for more detailed information.