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.DBF header
Message
De
19/07/2009 19:20:53
 
Information générale
Forum:
Visual FoxPro
Catégorie:
Codage, syntaxe et commandes
Titre:
Versions des environnements
Visual FoxPro:
VFP 9 SP2
OS:
Windows XP SP2
Divers
Thread ID:
01412377
Message ID:
01413301
Vues:
51
>Hi Yossi,
>
>>Suppose I want to write a routine that wil go thru all the .DBF files in the system and convert them back to Fox2x, what would be the implication of this?
>
>If you don't use any of the field types introduced in VFP 3 and later (datetime, integer, double, varchar, varbinary, ...), and you don't have any candidate indexes, and none of your fields support NULL values, then there wouldn't be any significant implication. Some data types such as memo fields use different length (4 bytes instead of 10).
>
>>I guess I'm asking what really is the difference between the VFP and FOX2X header?
>
>Aside from the possible features it's only a single byte for the table format. If you only have numeric, boolean, date and character fields, you could merely change this byte to turn the table into a Fox2x table and back.

Thanks!
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