home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Magnum One
/
Magnum One (Mid-American Digital) (Disc Manufacturing).iso
/
d3
/
dbasetut.arc
/
D306
< prev
next >
Wrap
Text File
|
1990-06-16
|
4KB
|
214 lines
*306010
C13,0
x╨ÇΦ
rüâΦ ╧─
q╧ÿΦN,,,,,,
a7,P,,,,,,
*306020
C15,0
räú° Field types for database files
q╧ÿ╕P,1,,,,,
a1,P,,,,,,
*306030
C15,0
rçê°Character
rëè°Numeric
rïî°Float
rîÄ°Date
rëÉ°Logical
rîÆ°Memo
q╧ÿΦN,,,,,,
a7,P,,,,,,
*306040
C2,0
rûåÉ┌ »─┐ è
rûçÉ│ » │ è
ràê· Character
rÆêÉ ä─┤
rÖê°Character
róêÉ is for any keyboard character: à │ è
rûëÉ│ » │ è
ràè╕ ä Numeric å
rûèÉ│ letter, number, or punctuation mark. ë │ è
rûïÉ│ » │ è
rïî╕Float
rûîÉ│ » │ è
rûìÉ│ Fields containing numbers not used for ç │ è
rîÄ╕Date
rûÄÉ│ » │ è
rûÅÉ│ calculation, such as phone numbers or zip ä │ è
rëÉ╕Logical
rûÉÉ│ » │ è
rûæÉ│ codes, should be character fields. ï │ ë
ràÆ╕ ç Memo å
rûÆÉ│ » │ è
rûôÉ└ »─┘ è
rûöÉ ╗
rüùΦ ╧─
rüÿÉPress
råÿ°
rêÿÉ &
rïÿ°
rîÿÉ to move the highlight
r¬ÿÉPress
r»ÿ° D
r▒ÿÉ to return to the design screen
q╧ÿÉS,,,,,,
QC1
a7,G,,,,,,
a8,T,306050,,,&H0050,,
a8,T,306090,,,&H0048,,
a8,C,D307,,,&H64,,
a8,C,D307,,,&H44,,
a8,C,D002,,,&H003F,,
*306050
C2,0
rûåÉ┌ «─┐ ï
rûçÉ│ « │ ï
ràê╕ Character å
rûêÉ│
rÖê°Numeric
ráêÉ is for fields containing î │ ï
rûëÉ│ « │ ï
ràè· ä Numeric
rÆèÉ ä─┤ numbers used in calculations. Å │ ï
rûïÉ│ « │ ï
ràî╕ å Float å
rûîÉ│ « │ ï
rûìÉ│ Fields used for an expense account or ç │ ï
rûÄÉ│ « │ ï
rûÅÉ│ for bookkeeping should be numeric. è │ ï
rûÉÉ│ « │ ï
rûæÉ│ « │ ï
rûÆÉ└ «─┘ ï
rûôÉ ╗
rûöÉ ╗
q╧ÿ╕S,,,,,,
QC1
a7,G,,,,,,
a8,T,306060,,,&H0050,,
a8,T,306040,,,&H0048,,
a8,C,D307,,,&H64,,
a8,C,D307,,,&H44,,
a8,C,D002,,,&H003F,,
*306060
C2,0
rûåÉ┌ ╕─┐
rûçÉ│ ╕ │
rûêÉ│ Numeric fields are generally used for numbers in å │
rûëÉ│ ╕ │
ràè╕ ä Numeric å
rûèÉ│ business applications. Float fields are more è │
rûïÉ│ ╕ │
ràî· å Float
rÆîÉ ä─┤ commonly used for scientific numbers. æ │
rûìÉ│ ╕ │
ràÄ╕ ç Date å
rûÄÉ│ ╕ │
rûÅÉ│
rÖÅ°Float
r₧ÅÉ is for numbers with a floating decimal point. │
rûÉÉ│ ╕ │
rûæÉ│ ╕ │
rûÆÉ└ ╕─┘
rûôÉ ╗
rûöÉ ╗
q╧ÿ╕S,,,,,,
QC1
a7,G,,,,,,
a8,T,306070,,,&H0050,,
a8,T,306050,,,&H0048,,
a8,C,D307,,,&H64,,
a8,C,D307,,,&H44,,
a8,C,D002,,,&H003F,,
*306070
C2,0
rûåÉ┌ ╣─┐
rûçÉ│ ╣ │
rûêÉ│
rÖê°Date
r¥êÉ is for dates in various forms. One form is ê │
rûëÉ│ ╣ │
rûèÉ│ ê mm/dd/yy ⌐ │
rûïÉ│ ╣ │
ràî╕ å Float å
rûîÉ│ mm is a 2-digit number for month (April is 04) ë │
rûìÉ│ ╣ │
ràÄ· ç Date
rÆÄÉ ä─┤ dd is a 2-digit number for day (April 1 is 04/01) å │
rûÅÉ│ ╣ │
ràÉ╕ ä Logical å
rûÉÉ│ yy is a 2-digit number for year ÿ │
rûæÉ│ ╣ │
rûÆÉ│ Æ (April 1, 1986 is 04/01/86) î │
rûôÉ│ ╣ │
rûöÉ└ ╣─┘
q╧ÿ╕S,,,,,,
QC1
a7,G,,,,,,
a8,T,306080,,,&H0050,,
a8,T,306060,,,&H0048,,
a8,C,D307,,,&H64,,
a8,C,D307,,,&H44,,
a8,C,D002,,,&H003F,,
*306080
C2,0
rûåÉ┌ ░─┐ ë
rûçÉ│ ░ │ ë
rûêÉ│
rÖê°Logical
ráêÉ is for fields containing Ä │ ë
rûëÉ│ ░ │ ë
rûèÉ│ Y or N (yes/no) ¥ │ ë
rûïÉ│ ░ │ ë
rûîÉ│ T or F (true/false) Ö │ ë
rûìÉ│ ░ │ ë
ràÄ╕ ç Date å
rûÄÉ│ Returned might be a logical field that ç │ ë
rûÅÉ│ would contain Y (for yes) if the borrower à │ ë
ràÉ· ä Logical
rÆÉÉ ä─┤ had returned a book, or N (for no) if the à │ ë
rûæÉ│ borrower hadn't returned it yet. Ä │ ë
ràÆ╕ ç Memo å
rûÆÉ│ ░ │ ë
rûôÉ└ ░─┘ ë
rûöÉ ╗
q╧ÿ╕S,,,,,,
QC1
a7,G,,,,,,
a8,T,306090,,,&H0050,,
a8,T,306070,,,&H0048,,
a8,C,D307,,,&H64,,
a8,C,D307,,,&H44,,
a8,C,D002,,,&H003F,,
*306090
C2,0
rûåÉ┌ ╕─┐
rûçÉ│ ╕ │
ràê╕ Character å
rûêÉ│
rÖê°Memo
r¥êÉ is for free-form notes related ô │
rûëÉ│ ╕ │
rûèÉ│ to the record. ¿ │
rûïÉ│ ╕ │
rûîÉ│ ╕ │
rûìÉ│ For example, the library could use a memo field ç │
rûÄÉ│ ╕ │
rûÅÉ│ for notes on each book, or each borrower. ì │
ràÉ╕ ä Logical å
rûÉÉ│ ╕ │
rûæÉ│ ╕ │
ràÆ· ç Memo
rÆÆÉ ä─┤ ╕ │
rûôÉ└ ╕─┘
rûöÉ ╗
q╧ÿ╕S,,,,,,
QC1
a7,G,,,,,,
a8,T,306040,,,&H0050,,
a8,T,306080,,,&H0048,,
a8,C,D307,,,&H64,,
a8,C,D307,,,&H44,,
a8,C,D002,,,&H003F,,