Winchell J. dBASE IV 2.0 query innovations // DBMS.-1993.-v.6.-N 10.-P. 68, 70, 72, 73.
    = dBASE IV 2.0 Borland. 
      .  
       
    - 
    dBASE IV 2.2,
    .
    , .
    dBASE IV FoxPro.
    . .