BLOB = Binary large object is a collection of binary data stored as a single entity.
JSON = JavaScript Object Notation is an open, standard file format and data interchange format that uses human-readable text to store and transmit data objects.
BLOB=二进制大对象是作为单个实体存储的二进制数据的集合。
JSON=JavaScript对象表示法是一种开放的标准文件格式和数据交换格式，它使用人类可读的文本来存储和传输数据对象。