Huawei Technologies Co., Limited

Huawei Device Co., Ltd.

Huawei Device (dongguan) Co., Ltd.

Guoping Wang

Linfang Jin

Hualin Li

Yongwang Xiao

Jie Zou

Junhua Zhu

Naixiang Xu

Embodiments of this application provide a terminal device, including a middle frame, a heat source device, a first heat dissipation assembly, and a second heat dissipation assembly, where the first heat dissipation assembly is disposed on one side of the middle frame, the heat source device and the second heat dissipation assembly are disposed on the other side of the middle frame, and at least one of the first heat dissipation assembly and the second heat dissipation assembly is a graphene heat dissipation assembly.

Heat dissipation assembly for a terminal device

A database replication method and apparatus for a distributed system are provided and relate to the database field. The method includes: receiving by a coordination server, a timestamp of a multi-partition transaction newly added to a first partition of a secondary cluster; determining, by the coordination server, a target timestamp for the first partition based on the received timestamp of the newly added multi-partition transaction and a stored multi-partition transaction timestamp of each partition of the secondary cluster; and sending, by the coordination server, the target timestamp to the first partition, so that the first partition executes a replication log in the first partition based on the target timestamp. In this way, the corresponding partition can execute, without waiting, a multi-partition transaction that is present in all the partitions but has not been executed, thereby avoiding data inconsistency and increasing replication efficiency.

Database replication method and apparatus for distributed system

A data query method and apparatus, and a database system, where the method includes receiving a data query request, generating an original query plan according to the data query request, obtaining a candidate query plan set according to the original query plan, restructuring a join predicate in the original query plan, determining basic information of a restructured join predicate in the original query plan, determining a constraint condition of the restructured join predicate in the original query plan, determining an equal-cost query plan for the original query plan according to the basic information of the restructured join predicate in the original query plan and the constraint condition of the restructured join predicate in the original query plan, and performing querying according to the equal-cost query plan for the original query plan. Hence, data query performance can be improved.

Data query method and apparatus, and database system

The present invention provides a heat dissipation assembly and an electronic device, where the heat dissipation assembly includes: a shielding element, where a via hole is disposed on the shielding element, the shielding element is electrically connected to ground copper of a PCB board, and a heat-generating electronic element is disposed on the PCB board; a heat pipe, located on the via hole, where the heat pipe is electrically connected to the shielding element, and the heat pipe, the PCB board, and the shielding element form an electromagnetic shielding can that is used to accommodate the heat-generating electronic element; and an elastic thermal interface material, disposed between the heat pipe and the heat-generating electronic element and mutually fitted to the heat pipe and the heat-generating electronic element.

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Shenzhen, China

Guoping Wang