| 摘要 |
<p>The invention relates to a method comprising: receiving a mini drive file after a threshold publication time (340, 515), wherein the mini drive file contains pointers to a plurality of delta definition files and a pointer to a storage area (435), and each of the plurality of delta definition files comprises changes to a full signature definition file; comparing a version identifier associated with a full signature definition file installed on a client computer with the versions identified in the mini drive file so as to identify information associated with an appropriate delta definition file (520); and requesting the delta definition file from the storage area.</p> |
