Digraph will be constructed by using the dependence of the left of subset's FD. Some nodes will help to decompose a subschema of BCNF. The key of the subschema is the left or left's equivalence.

FD集中根据左部等价形成划分，划分的各子集根据左部的依赖关系形成一个有向图，有向图中每一个节点的FD可能是一个符合BCNF的子模式的FD，其关键字就是各子集的等价左部。

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As for TD-LTE, China Mobile expects its 4G technology to bloom in China some time between 2014 and 2015, as it continues to help the development of devices that natively support five modes (GSM, TD-SCDMA, UMTS, FD-LTE and TD-LTE) along with 10 to 12 bands.

ENGADGET