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мф-специф-107д
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2009-10-10
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73 lines
\═╞-╙╨┼├╔╞-107─
╙CREEN 1 OF 3
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┼═╔├╥╧╞╔╠┼ ─ATABASE ╙YSTEM╞
╟╙PECIFICATIONS╚
╘HE MEANINGS OF THE WORDS -
FILE - RECORD - HEADING - FIELD
SHOULD BE UNDERSTOOD BEFORE YOU
PROCEED. ┴ COMPARISON WITH AN INDEX
CARD FILE IS A GOOD WAY TO VISUALIZE
THEM.
┴ DATA FILE IS EQUIVALENT TO A GROUP
OF CARDS DEALING WITH ONE SUBJECT -
A SET OF NAMES AND ADDRESSES WOULD BE
A GOOD EXAMPLE.
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\═╞-╙╨┼├╔╞-107─
╙CREEN 2 OF 3
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┴ RECORD IS THE SAME AS AN INDIVIDUAL
INDEX CARD COVERING ONLY ONE PERSON.
┴NOTHER PERSON WOULD BE COVERED ON
ANOTHER RECORD OR INDEX CARD.
┴ HEADING IS THE SAME ON AN INDEX
CARD AND IN A DATA FILE. ┼XAMPLES ARE
NAME - ADDRESS - PHONE NUMBER - ETC.
┴ FIELD IS THE DATA (OR SPACE TO PUT
THE DATA) COVERED BY ONE HEADING. ╞OR
EXAMPLE -
╚EADING ╞IELD
╬AME ╩OE ╩ONES
┴DDRESS 12345 ╘OOMEY ─RIVE
╨HONE ╬UMBER 601-123-4567
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\═╞-╙╨┼├╔╞-107─
╙CREEN 3 OF 3
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╘HESE THREE FIELDS TOGETHER FORM A
RECORD. ┴ NUMBER OF RECORDS COVERING
A GROUP OF PEOPLE IS A FILE.
╘HE TOTAL CAPACITY OF THE FILE IS AN
INTER-RELATIONSHIP OF THE NUMBER OF
RECORDS/NUMBER OF HEADINGS/FIELD DATA
LENGTH/HEADING LENGTH/RECORD TOTAL
LENGTH. ╘HE FILE CAN HOLD OVER 14000
CHARACTERS. ╘HE MAXIMUM SIZES ARE - -
╬UMBER OF DATA FILES ........... 13
╬UMBER OF RECORDS .............. 300
╬UMBER OF HEADINGS (FIELDS) .... 14
╚EADING NAME SIZE .............. 12
─ATA FILE NAME SIZE ............ 15
╥ECORD TOTAL LENGTH ............ 254
╞IELD AND SEARCH DATA LENGTH ... 28
╨╞ILE>\═╞-╙╨┼├╔╞-107─╤
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