Big data is a collection of data, and its scale far exceeds the capabilities of traditional database software tools in acquisition, storage, management and analysis. It has four characteristics: massive data scale, rapid data flow, diverse data types and low value density.
Big data can be simply understood as: "Big data" is a data set with a particularly large volume and a particularly large data category, which cannot be captured, managed and processed by traditional database tools.
The strategic significance of big data technology lies not in mastering huge data information, but in specialized processing of these meaningful data.