Abstract: Apparatus, method and storage medium for data query is disclosed. One or more domain-related question-answering pairs, files, and summary information of each file may be pre-stored in a vector database. When receiving the query request from the user, the question-answering system first obtains the associated data of the received query request from the vector database, and the associated data includes the associated question-answering pair and the associated summary information corresponding to the query request. Then, the question-answering system inputs the associated data and the query request into the large language model to obtain an intermediate query result. Finally, if there is summary information matching the intermediate query result in the associated summary information, the file corresponding to the matched summary information is added to the intermediate query result to obtain the query result corresponding to the query request.

Abstract: A data backup method, a data recovery method, and an electronic device are disclosed. The data backup method includes: determining a data set to be backed up, performing a status update operation on a data block in the data set, determining the time points when the data block changes from the first phase to the second phase, and when the data block changes from the second phase to the third phase, and performing data backup on the data set to generate backup files. With this method, upon data seal time point, no fresh data can be reached in any data block, and the data block back-up persists, so that the time point of the data backup operation is more accurate, the cut point of which deleted data should be included in the back up is easy to locate, and the deleted data may be accurately processed.

Abstract: A data backup method, a data recovery method, and an electronic device are disclosed. The data backup method includes: determining a data set to be backed up, performing a status update operation on a data block in the data set, determining the time points when the data block changes from the first phase to the second phase, and when the data block changes from the second phase to the third phase, and performing data backup on the data set to generate backup files. With this method, upon data seal time point, no fresh data can be reached in any data block, and the data block back-up persists, so that the time point of the data backup operation is more accurate, the cut point of which deleted data should be included in the back up is easy to locate, and the deleted data may be accurately processed.