Table A Paradox validity checks Validity check Meaning
Required field Every record in the table must have a value in this field. SQL tables can also use this validity check (equivalent to NOT NULL).
The values entered in this field must be equal to or greater than the minimum you specify here.
The values entered in this field must be less than or equal to the maximum you specify here.
The value you specify here is automatically entered in this field. You can replace it with another value.
You specify a character string that acts as a template for the values that can be entered in this field. The values entered in this field are automatically formatted according to this picture.
For information on pictures, search for "picture strings" in the keyword list in Database Desktop Help, and choose the topic "Picture String Characters."
For detailed information on validity checks, search for "validity checks" in the keyword list in Database Desktop Help.
Note A "Required field" validity check will set a Delphi TField's Required property to True when the table is accessed from a Delphi application.
Minimum Maximum Default Picture
Post a comment