Abstract: An embodiment of the present disclosure discloses a computer program executable by one or more processors and stored in a computer readable medium. The computer program causes the one or more processors to perform operations for database management, the operations including: generating a sorted table by sorting a table including one or more records based on at least one column; identifying a current key corresponding to each of one or more rows included in the sorted table; sequentially recording a record corresponding to each of the one or more rows in a data structure based on a result of a comparison between the current key corresponding to each of the one or more rows and a previous key; and generating an integrated result value for a record recorded in the data structure and recording the generated integrated result value in an output table.

Abstract: A transmission of a sounding reference signal by an electronic device is provided. A method of an electronic device includes transmitting a signal via a first antenna subset including at least one of a plurality of antennas, measuring an emission environment of the plurality of antennas, using the signal, determining at least one antenna to be used for transmitting a sounding reference signal (SRS), based on the emission environment, and transmitting the SRS via the at least one determined antenna. The emission environment includes a strength of a reflected signal that corresponds to the signal and is reflected by the first antenna subset, or a strength of a reception signal that corresponds to the signal and is received by a second antenna subset including at least one remaining antenna.

Abstract: A method of fabricating a semiconductor device includes forming a magnetic tunnel junction layer including a first magnetic layer, a second magnetic layer, and a tunnel barrier layer interposed between the first and second magnetic layers, patterning the magnetic tunnel junction layer to form a magnetic tunnel junction pattern, forming an insulating layer to cover the magnetic tunnel junction pattern, and performing a thermal treatment process to crystallize at least a portion of the first and second magnetic layers. The thermal treatment process may include performing a first thermal treatment process at a first temperature, after the forming of the magnetic tunnel junction layer, and performing a second thermal treatment process at a second temperature, which is higher than or equal to the first temperature, after the forming of the insulating layer.