2) There are two numeric fields one has VALUE as SPACES.If first field is moved to second one what will happen ?
What sort of numeric?
If you are saying can any NUMERIC have a VALUE clause when defined that says SPACE, then no, you'd get a compile error. Irrelevant to second numeric field, it definition of field one would give the error.
Dumb question again, insufficient information to provide a reasonable answer inside 20 minutes.