Once you've done this prep, you can easily export data from FileMaker into a standard format like CSV, which can in turn be imported directly into new Postgres tables.
Data constraints these will just get lost in a transfer, so it's probably best to just note any you care about and recreate these manually in our Postgres DDL. The challenge here will be finding a clean way to get container data into SQL, since CSV and similar formats won't accept blobs unless you convert them to Base64 (FileMaker can do this for you if needed) Container fields, which are similar to SQL BLOBs. Repeating fields, a legacy left over from FileMaker's pre-relational days, will need to be translated to separate tabular structures. Calculated fields, which play a heavy role (especially in earlier FileMaker solutions) won't translate directly to SQL and should probably simply be dropped and recreated with application logic later on. Second, I'd look to see if there are any idiosyncratic FileMaker data structures that won't transfer cleanly. Are the fields types logically defined, and primary/secondary keys consistent and well-structured? If not, I'd strongly advise you to address these issues (either in FileMaker or Access if you prefer) before proceeding with your migration. Are all data tables designed with standard relational principles? (FileMaker supports, but does not enforce relational design). You can use Access as a middle layer in this process, but there's no reason to do so other than personal preference.įirst, I'd advise you to spend some time analyzing your FileMaker database. 
xsl Common file extensions used by FileMaker Pro for Windows
FileMaker Pro for Windows default file extension associations Although its likely, that some file extensions may be missing from the list of associated file extensions with the application, yet they can be opened, be part of, or otherwise be associated with the program. However most, if not all directly associated file extensions should be listed with its appropriate program. The list of extensions used or otherwise associated with the application may not be complete, because many common file extensions on our website, such as jpg (pictures) or txt (text files), can be opened by a large number of applications, or are too general file format. Note: You can click on any file extension link from the list below, to view its detailed information.
FileMaker Pro for Windows works with the following file extensions:
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