What is the difference between a Physical File & a Logical?
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Answer Posted / cyjil
A PHYSICAL FILE IS A DATABASE FILE AND IT CONTAINS DATA..
LOGICAL FILE IS AN ARRANGEMENT OF DATAS FROM ONE OR MORE
PHYSICAL FILE.. BUT IT DOESN'T CONTAINS DATA.. IT IS A VIEW
OF P.F
| Is This Answer Correct ? | 9 Yes | 10 No |
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i am using non join multiple format my 3 database file is like that pf97 R REC ENAME ETENNO ESTATUS K ENAME pf98 R REC1 ENAME ESAL K ENAME PF99 R REC3 ENAME CRDCARD EID K EID & MY NON JOIN LOGICAL FILE IS ALSO SAME EXCEPT RECORD NAMES BEFORE I TRIED WITH 2 FILES SO ITS SAYS ERROR I.E.(Key field attributes must be same as for previous formats. ) SO I CHANGED KEYFIELD ACCORDING TO PF SO ITS WORKING BUT AFTER ADDING 3 FILES ITS SAYING SAME ERROR . I DONT KNOW I NEW IN AS400 PLLZ HELP ME I HAVE ONE MORE QUE. CANT BE USE DIFFERENT KEYFIELD (NOT ACCORDING TO PF) IN NON JOIN LOGICAL FILE.
