DDF Files


<< Click to Display Table of Contents >>

Navigation:  Getting Started >


DDF Files


Previous pageReturn to chapter overviewNext page


One of the ways that programmers have used to describe the structure of Btrieve Tables is by using an external Dictionary.

This dictionary consists of three (or optionally five) tables with the following names:


File.ddf        List of filenames and file locations

Field.ddf        List of fieldnames, lenth and type

Index.ddf        List of index segments

Comment.ddf        (Optional) description of fields & files

FieldExt.ddf        (Optional) extended field types


VO2Btrieve has a number of classes designed to work together with these dictionary files. These classes allow you to open files based on the defintion in the dictionary. There are also some support functions designed to work with DDF Files. These functions are: Bt_ReadDDFieldInfo











See Also



BtDDFileServer, BtDDFieldServer, BtDDIndexServer, BtDDFieldExtServer, BtDDCommentServer, BtDDFServer