Hypertrieve Database Engine
The Hypertrieve database engine is a highly efficient, object-oriented database that is developed by Accruent and embedded into Meridian Enterprise. It is optimized for use with Meridian and the Use HyperCache option described in Configure Hypercache.
Hypertrieve requires very little system administration and, in fact, has no database management user interface. The data files for a vault stored in Hypertrieve reside in the location specified when the vault was created, C:\BC-Meridian Vaults by default. Each of the Hypertrieve files are named <VaultName>.* where each file extension is described in the following table.
Hypertrieve database engine file types
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.csv
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Progress information for a stopped batch import so that the import may be resumed at a later time.
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.hdb
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Main data file. This file is always open when the EDM Server service is running.
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.lck
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Database lock file. This file is always present when the .hdb file is open by the EDM Server service.
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.log
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Transaction log file. This file accumulates document property changes until one of these events occurs:
- The log file reaches the size specified by the Maximum log size option
- A Prepare for Backup operation is executed
- The EDM Server service is stopped
When one of these events occurs, the contents of the log file are committed to the .hdb file, a new snapshot is generated and an empty log file is initialized.
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.snp
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The last snapshot file created either by the Minimum snapshot interval option or a Prepare for Backup operation.
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