- (BOOL) prepareNewTable:(NSInteger) fileType;

Function prepareNewTable() prepares internal structures for creating a new table.
The simple version of this function accepts a file type, and the extended version allows you to define size of memo fields and provide a name of driver (for dbaseLevel7 only).

- (BOOL) prepareNewTable:(NSInteger) fileType memoSize:(NSInteger)memoSize driver:(NSString*)driver;

// if ([dbf prepareNewTable:5 memoSize:512 driver:@"dBase7driver"])
if ([dbf prepareNewTable:0])
    [dbf addField:@"ID" fieldType:'N' length:10];
    [dbf addField:@"NAME" fieldType:'C' length:20];
    [dbf addField:@"BIRTH" fieldType:'D' length:8];
    [dbf addField:@"WEIGHT" fieldType:'N' length:10 decimal:2];

    // if ([dbf createAndOpenTable:@"testfile.dbf"])
    if ([dbf createTable:@"testfile.dbf"])