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Database Essentials
OpenEdge RDBMS : OpenEdge architecture : Other block types : Storage object blocks
Storage object blocks
Storage object blocks contain the addresses of the first and last records in every table by each index. If a user runs a program that requests the first or last record in a table, it is not necessary to traverse the index. The database engine obtains the information from the storage object block and goes directly to the record. Because storage object blocks are frequently used, they are pinned in memory. This availability further increases the efficiency of the request.