Abstract: According to an embodiment, in response to receiving a first designated request from another electronic device while outputting a first screen and first audio, at least one processor of an electronic device, individually and/or collectively, may be configured to control the electronic device to transmit a first signal and a second signal for outputting the first screen and the first audio by the other electronic device, respectively. While transmitting the first signal and the second signal, at least one processor may individually and/or collectively be configured to control the electronic device to receive, from the other electronic device, a second designated request for executing a second application distinct from the first application related to the first audio.

Abstract: A mobile terminal and a control method therefor are disclosed. The mobile terminal and the control method therefor of the present invention can: broadcast, to at least one external electronic device, advertising data and a signal for requesting the activation of a second layer included in a communication unit of the at least one external electronic device through a first layer related to low-power near field communication technology; pair with a specific electronic device through a second layer related to specific near field communication technology distinguished from the low-power near field communication technology, if a response to the activation request is received from the specific electronic device among the at least one external electronic device; and transmit data to the paired specific electronic device.

Abstract: Transaction management methods for enhancing data stability of a NoSQL DB based on a distributed file system are presented. The methods include, for instance: initializing a data storage transaction in which the distributed file system stores a logical file in the NoSQL DB, writing, by the distributed file system, the logical file into an inter-file IF, and moving, by the distributed file system, the inter-file to a physical file of the NoSQL DB when commit on a transaction occurs.

Abstract: A mobile terminal and a control method therefor are disclosed. The mobile terminal and the control method therefor of the present invention can: broadcast, to at least one external electronic device, advertising data and a signal for requesting the activation of a second layer included in a communication unit of the at least one external electronic device through a first layer related to low-power near field communication technology; pair with a specific electronic device through a second layer related to specific near field communication technology distinguished from the low-power near field communication technology, if a response to the activation request is received from the specific electronic device among the at least one external electronic device; and transmit data to the paired specific electronic device.