Abstract: The fire arm contains a frame, a barrel (2) and mobile elements (4) containing an extractor to carry along a casing during the recoil and an element (7) to close the fire chamber (3). The fire arm further contains an ejection device with an ejector (25,26) mounted in this closing element (7), and guiding means for the casing which make this casing swivel during the ejection. This arm contains a lever mounted next to the extractor in a swiveling manner on one of the other mobile elements (4), whereby this lever is provided with a cam working in conjunction with the extractor. The frame is provided with a control stop situated in the trajectory of the lever during the forward movement of the mobile elements (4), making the lever swivel when the casing must be released from the extractor.

Abstract: Pursuant to receipt of a data modification command or statement, such as an Update command, it is determined which fields in a data structure, such as a UDT, computed column, indexed view, or index, for example, will be changed as a result of the command. Only those fields that are affected by the command will be changed. Thus, changes are propagated to only to those dependent data structures whose content is being modified. Tree representations are used to facilitate the determination as to whether a subfield in a hierarchy is changed.

Abstract: Pursuant to receipt of a data modification command or statement, such as an Update command, it is determined which fields in a data structure, such as a UDT, computed column, indexed view, or index, for example, will be changed as a result of the command. Only those fields that are affected by the command will be changed. Thus, changes are propagated to only to those dependent data structures whose content is being modified. Tree representations are used to facilitate the determination as to whether a subfield in a hierarchy is changed.