函数索引可以根据用户定义的类型创建。

A functional index can be created on user defined types.

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这些类型的任务与在数据库中创建并管理对象相关，比如表和索引。

These types of tasks are related to creating and managing objects in the database, such as tables and indexes.

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ClearQuest会为特定类型的字段创建一个索引，它应该涵盖大多数的用例。

ClearQuest creates an index for certain types of fields, which should cover most use cases.

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