Non-volatile memory cards in which the writing processes are controlled by a microprocessor. In order to improve the coherence of data recorded in non-volatile files, the invention provides a method of jointly controlling several writing process (addition, updating or eliminating of records). The successive operations are performed by recording in a non-volatile transaction space (TS) the data corresponding to the state of the memory before each operation (in particular old chainings (A7/16) of chained recordings). Then, a global validation command of N operations is performed or, on the contrary, a global invalidation command is performed, validating or invalidating of individual operations not being allowed.