A synchronization system and method for databases by which the immediacy of synchronization between the databases can be assured without dialup connection and the power supply to an information terminal need not always be on to keep the information terminal in a standby state is disclosed. There is an interval between each two adjacent current collecting fiber conductors. Each of the at least one first type of connecting members is configured to cooperate with a respective one of the second type of connecting members to connect at least two of the bone plate elements together, thereby forming a bone plate arrangement. 6, and 3x+4y+5z=8, and wherein A is at least one trivalent rare earth cation, B is at least one tetravalent cation, D is at least one pentavalent cation, and E is at least one divalent anion. The force has a component that is transversal to the Bragg grating and effects a change in strain of the Bragg grating and thereby a change in an optical period of the Bragg grating.