Zone partition can effectively optimize the topology of location databases and efficiently reduce the cost of location paging and location update.

区域划分能够优化位置数据库的拓扑结构，有效地降低查询和更新代价。

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Using a directory to store user and group information has the advantage of centralizing databases in a single location for reducing user and group management complexity.

使用目录存储用户和组信息的优点是，可以将多个数据库集中于单个位置，以便降低用户和组的管理复杂性。

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Remember, DB2 will still need that directory in the old location to be able to find the remaining databases.

要记住，DB 2要求该目录仍然保留在原来的位置，以便能够发现剩余的数据库。

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Apple is way behind here and Nokia has some of the best location software and databases in the industry from its 2007 Navteq deal.

FORBES: Why Apple Should Buy Nokia

Once the user's location is known, existing demographic databases, which have been honed over the years to reveal what kinds of people live where, can be brought into play.

ECONOMIST: Geography and the net

Google and Apple responded by saying that users can turn location tracking on their phones off, and that location sent back to their companies for the purposes of creating large crowd-sourced databases is anonymized.

FORBES: Senators Grill Apple And Google Over Smartphone Privacy