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POOne-way database sync to MySQL
 

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    <p>I have an VFP based application with a directory full of DBFs. I use ODBC in .NET to connect and perform transactions on this database. I want to mirror this data to mySQL running on my webhost. </p> <p>Notes:</p> <ul> <li>This will be a one-way mirror only. VFP to mySQL</li> <li>Only inserts and updates must be supported. Deletes don't matter</li> <li>Not all tables are required. In fact, I would prefer to use a defined SELECT statement to only mirror psuedo-views of the necessary data</li> <li>I do not have the luxury of a "timemodified" stamp on any VFP records. </li> <li>I don't have a ton of data records (maybe a few thousand total) nor do I have a ton of concurrent users on the mySQL side, want to be as efficient as possible though. </li> </ul> <p>Proposed Strategy for Inserts (doesn't seem that bad...):</p> <ul> <li>Build temp table in mySQL, insert all primary keys of the VFP table/view I want to mirror</li> <li>Run "SELECT primaryKey from tempTable not in (SELECT primaryKey from mirroredTable)" on mySQL side to identify missing records</li> <li>Generate and run the necessary INSERT sql for those records</li> <li>Blow away the temp table</li> </ul> <p>Proposed Strategy for Updates (seems really heavyweight, probably breaks open queries on mySQL dropped table):</p> <ul> <li>Build temp table in mySQL and insert ALL records from VFP table/view I want to mirror</li> <li>Drop existing mySQL table</li> <li>Alter tempTable name to new table name</li> </ul> <p>These are just the first strategies that come to mind, I'm sure there are more effective ways of doing it (especially the update side). </p> <p>I'm looking for some alternate strategies here. Any brilliant ideas?</p>
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