Which three are true is true about unusable indexes

选择了： Rebuilding an unusable index creates a new object.、An index can be set unusable manually.、An unusable index can be bypassed by the optimizer when creating an execution plan.

选择了： Rebuilding an unusable index creates a new object.、An index can be set unusable manually.、An index can become unusable automatically due to actions performed on other objects.、Rebuilding an unusable index requires at least one row to exist in the indexed table、Rebuilding an unusable index reuses the space from the original index segment.

选择了： Rebuilding an unusable index creates a new object.、An index can be set unusable manually.、An index can become unusable automatically due to actions performed on other objects.、Rebuilding an unusable index requires at least one row to exist in the indexed table

选择了： Rebuilding an unusable index creates a new object.、An index can be set unusable manually.、An index can become unusable automatically due to actions performed on other objects.、Rebuilding an unusable index reuses the space from the original index segment.

选择了： Rebuilding an unusable index creates a new object.、An index can be set unusable manually.、An index can become unusable automatically due to actions performed on other objects.

选择了： Rebuilding an unusable index creates a new object.、An index can be set unusable manually.、Rebuilding an unusable index requires at least one row to exist in the indexed table、Rebuilding an unusable index reuses the space from the original index segment.

选择了： Rebuilding an unusable index creates a new object.、An index can be set unusable manually.、Rebuilding an unusable index requires at least one row to exist in the indexed table

选择了： Rebuilding an unusable index creates a new object.、An index can be set unusable manually.、Rebuilding an unusable index reuses the space from the original index segment.

选择了： Rebuilding an unusable index creates a new object.、An index can be set unusable manually.

选择了： Rebuilding an unusable index creates a new object.、An unusable index can be bypassed by the optimizer when creating an execution plan.、An index can become unusable automatically due to actions performed on other objects.、Rebuilding an unusable index requires at least one row to exist in the indexed table、Rebuilding an unusable index reuses the space from the original index segment.