Abstract: The present disclosure relates to a data management method and apparatus, a storage medium, and an electronic device. The method comprises: obtaining a data access request sent by an engine side, the data access request being used for requesting to perform an access operation on first target data in a data lake; determining, according to the data access request, target metadata corresponding to the first target data from a metadata storage module, the metadata storage module storing metadata of the data lake in different storage modes, respectively, and the metadata stored in the different storage modes having at least one type of the same information; and sending the first target data corresponding to the target metadata in the data lake to the engine side. By constructing a data lake metadata unified service view that meets various engine requirements, metadata intercommunication between different engines is realized.

Abstract: The present disclosure relates to a data management method and apparatus, a storage medium, and an electronic device. The method comprises: obtaining a data access request sent by an engine side, the data access request being used for requesting to perform an access operation on first target data in a data lake; determining, according to the data access request, target metadata corresponding to the first target data from a metadata storage module, the metadata storage module storing metadata of the data lake in different storage modes, respectively, and the metadata stored in the different storage modes having at least one type of the same information; and sending the first target data corresponding to the target metadata in the data lake to the engine side. By constructing a data lake metadata unified service view that meets various engine requirements, metadata intercommunication between different engines is realized.

Abstract: The present disclosure provides use of guar gum, a fluorescence-enhanced gold nanocluster, a method for detecting ?-glucosidase (?-Glu), and a method for screening an ?-Glu inhibitor, and belongs to the technical field of nanoscale biosensing. The present disclosure provides the use of the guar gum in improving a fluorescence emission intensity of a gold nanocluster. In the present disclosure, the guar gum is a natural high-molecular polymer extracted from seeds of guar, a leguminous plant, and has a low price, no toxicity, and desirable biocompatibility. The guar gum includes galactose and mannose, is rich in hydroxyl groups in a molecular backbone, and can improve a fluorescence emission intensity of the gold nanocluster. On this basis, detection of an ?-Glu activity and screening of an ?-Glu inhibitor can be realized with a high sensitivity and low cost.