Inhibiting (blocking) mechanism for a CHECK-IN/CHECK-OUT model

摘要

An inhibiting mechanism for a CHECK-IN/CHECK-OUT model, in which one or more clients (9) access a public database of a server (1), comprises a management section (2) for long transmissions, which is present in the server (1) and is used for the purpose of managing transmissions which are requested by the client (9) and comprise a CHECK-OUT operation which copies data from the public database (8) and a CHECK-OUT operation which writes data back to the public database (8), and also a management section (5) for short transmissions, which is present in the server (1) and is used for the purpose of managing transmissions which do not copy any data from the public database (8), as well as a transmission list (7) for storing information which refers to the contents of the transmissions carried out by the management sections (2, 5) for long and short transmissions, respectively. The management section (2) for long transmissions puts off the CHECK-OUT operation of any arbitrary data until another transmission which is accessing the arbitrary data is completed, if the other transmission has been detected by the transmission list (7) between the CHECK-IN operation and CHECK-OUT operation. IMAGE