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ElevateDB Frequently Asked Questions

The following is a listing of the most frequently asked questions for ElevateDB and the answers to these questions.

Arrow Is ElevateDB compatible with DBISAM or can it access DBISAM tables ?

Arrow How do I change the path of a defined database after a database has been moved to a different location ?

Arrow When creating tables there are defaults for index page size, BLOB block size, and buffering sizes. Is there a way to determine what the best values would be for a particular table ?

Arrow When I try to migrate a database to ElevateDB using the ElevateDB Manager, the combo box does not contain any migrators. Why are there no migrators ?

Arrow How do I re-compile the ElevateDB Manager or ElevateDB Server ? I'm getting errors about missing components when I try to load the edbmgr or edbsrvr projects in Delphi.

Arrow Why does a query with joins in the WHERE clause take a very long time to execute in ElevateDB ?

Arrow When I try to share the same database with multiple client applications, I receive the error "ElevateDB Error #300 Cannot lock database <DatabaseName> for shared access" when I start the second client application. Why am I receiving this error ?

Arrow When running an ASP.NET application that uses the ElevateDB ODBC Driver, an application fault referring to the IDispenserDriver::DestroyResource method occurs after a few operations using the driver. What could be causing this ?


DBISAM Frequently Asked Questions

The following is a listing of the most frequently asked questions for DBISAM and the answers to these questions.

Arrow I've developed an application using DBISAM, and I'm experiencing performance problems. What can I look for in terms of optimizations ?

Arrow Are there any special considerations when converting a single-user application using DBISAM to a multi-user application on a network ?

Arrow Can DBISAM access tables on a read-only device like a CD-ROM ?

Arrow My customer has sent me a table that has become corrupted. How did this occur ?

Arrow Do I have to do anything special to install DBISAM at a customer's site ?

Arrow Can DBISAM be used safely with multiple threads ?

Arrow I have encrypted certain tables in order to protect them from unauthorized access. How do I automatically open these tables up in my application without the user seeing a password prompt ?

Arrow Does DBISAM support auto-increment fields and are they safe to use ?

Arrow Do I have to pack or reorganize DBISAM tables like in dBase or FoxPro to regain deleted records in the tables ?

Arrow What is the granularity of the BLOB fields ? Do they always consume some multiple of a minimum block size, or are they truly variable in length ?

Arrow How do I report progress back to the user for indexing and other bulk operations ?

Arrow In multi-user mode does DBISAM employ page-locking or record locking ?

Arrow I accidentally deleted a field while altering the structure of a table, and I need to get the data back. How do I do that ?

Arrow Is the DISTINCT clause in the COUNT function supported in DBISAM ?

Arrow When I execute a particular SQL query or attempt to alter the structure of an existing table I get the error "DBISAM Engine Error # 11013 Access denied to table 'xxxx'" ?

Arrow I need to provide the equivalent functionality that is provided in the TBatchMove component provided with the BDE, can I do this with DBISAM ?

Arrow I've got my data in another format besides Paradox or dBase and I want to convert it into DBISAM format. How do I do this ?

Arrow When running an ASP.NET application that uses the DBISAM ODBC Driver, an application fault referring to the IDispenserDriver::DestroyResource method occurs after a few operations using the driver. What could be causing this ?





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Tuesday, July 15, 2008 at 12:15 PM

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