What is Index

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A data structure that improves the speed of data retrieval operations on a database table at the cost of slower writes and increased storage space. Indices can be created using one or more columns of a database table, providing the basis for both rapid random lookups and efficient access of ordered records.

Other related questions:
How to configure time segment indexes on the U1900?
1. For versions earlier than V200R003C00, you can run the config add timerange command to add time segment indexes. 2. For V200R003C00 and later versions, you can configure time segment indexes on the web UI. For details, see Configuration > Feature Guide > Automatic Switchboard in the U1900 product documentation.

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