Text-File data source limitations


It is possible to use a simple text file as the data source for libvrmldb.  This is intended as a sort of catch-all to support databases which do not have a native libvrmldb interface.  Simply export the interested relation to a tab delimited text file and use the Text-File interface to create a VRML world.  This interface, however, has some limitations that should be considered when exporting the relation.  The exported file must structured as follows:
 

  • No more than 10 fields/attributes are allowed.
  • Fields are tab delimited.
  • The entire file is read into memory at initialization time which means that large files can create excessive memory requirements.