An oper mart is a just-in-time data mart,usually built from one operational database in anticipation or in response to major events such as disasters and new product introductions.

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An oper mart is indeed a just-in-time data mart that is typically built from one operational database in preparation or in response to significant events such as disasters and new product releases.

An Oper Mart Is a Just-In-Time Data Mart,usually Built from One