[Koha] acquistion and cataloging

[Zeki Celikbas]

hi all,

when I was searching at koha's demo data I've saw every data 
entered twice at aqbookfund table for example:

INSERT INTO aqbookfund VALUES ('1','Adult Non-Fiction','1');
INSERT INTO aqbookfund VALUES ('1','Adult Non-Fiction','1');
INSERT INTO aqbookfund VALUES ('5','Young Adult Fiction','3');
INSERT INTO aqbookfund VALUES ('5','Young Adult Fiction','3');
INSERT INTO aqbookfund VALUES ('4','Fiction','2');
INSERT INTO aqbookfund VALUES ('4','Fiction','2');
INSERT INTO aqbookfund VALUES ('2','Talking books','4');
INSERT INTO aqbookfund VALUES ('2','Talking books','4');
....

is there any important function of entering like this?