*1-190
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rââ┘  Overview   
rÉâ∙∙
ræâ┘   
röâ┘What is a database?
rºâ┘ ⌐ 
râäτ ┴─
rüëç 
råëçThe card catalog has two advantages over the address book:
rìïç  
rçîç  ∙  new entries can
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rîÄçin alphabetical order
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rÑÆç  
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r▓Æç│
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*1-194
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*1-196
r╢ìç æ 
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r▓îÅ ù 
r╝ìÅ ì 
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*1-198
r¿ìº\
r¡ìº/
r⌐ĺ\
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r╡Äç┌ ë─┐
rºÅÅOld
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r╢źNew  card
r┐Åç│
r¿Éτ  
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rëæç∙
rîæçchanges can be made
r¿æç─
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r¡æç───┘ ä └ ë─┘
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r¬Æç   
r¡Æº\
r«Æç æ 
rîôçeasily by replacing an
r¬ôç ò 
r¬öç ò 
rîòçold card with a new one.
râù╕ F9 to review 
rñù┘  Press  
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r▒ù┘  to continue  or  
r─ù∙F5
rƗ٠to exit  
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*1-200
råëçBut if the library needed a list of all its books published
råïçin 1945, the librarian's task of searching through all the
rüîç ╨ 
råìçcards and writing a list by hand would be long and tedious. 
rüÄç ╨ 
rüÅç ╨ 
råÉçIt would be easier if the library had a listing of its
r┐Éç 
rüæç ╨ 
råÆçbooks arranged numerically, by date of publication.
rîôç û 
r⌐ôç ú 
rîòç Ö 
r⌐òç ¥ 
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*1-210
råëçBecause of the work involved in creating separate listings,
råïçmost libraries ç 
r¢ïº┌ Æ─┐
r»ïç à 
r┤ïº┌ ô─┐
r¢îº│
r£îÅ Æ 
r«îº│
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r╖îÅ Å 
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rüìÅ   
räìç  settle for two: å 
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r£ìç  
r₧ìÅAuthor Catalog
r¼ìç  
r«ìº│
r»ìç  &  
r┤ìº│
r╡ìç  
r╖ìÅSubject Catalog
r╚ìº│
rüÄç Ü 
r¢Äº└ Æ─┘
r»Äç à 
r┤ĺ└ ô─┘
r╔Äç ç 
rüÉç ╨ 
rüæç à The information in both catalogs is the same, but the order of ë 
rüÆç ╨ 
rüôç à the cards is different. ┤ 
r⌐òç £ 
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*1-220
råëçIf the library used dBASE III PLUS to store its database, à 
råïçinstead of the card system, the librarian could create ì 
rüîç ╨ 
råìçdifferent listings of the books from the same database  
r┐ìç è 
rüÄç ╚ 
rüÅç à quickly and efficiently. │ 
rüæç ╨ 
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*1-221
dóåÅ  
ríêç 
róêÅ 
rüëç └ 
r╩ëç ç 
ríèç à 
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rüïç à From the original database, ç 
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råîç ¥ 
rúîº 
rªîç  
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r⌐îç Original 
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r╩îÅ  
rüìç à new listings could be made   
rúìº   
rªìç  
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r⌐ìç database 
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r╩ìÅ  
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u«ëº││
r¬åçAlphabetical listing by author
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*1-223
r┤ïº───
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r║èçAlphabetical listing
r║ïçby subject
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*1-224
r┤ź─── 
r║ÅçNumeric listing
r║Éçby call number
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*1-225
d▒ƺ││
r«òçNumeric listing by date
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*1-226
râù╕ F9 to review 
rñù┘  Press  
r¡ù∙──┘
r▒ù┘  to continue  or  
r─ù∙F5
rƗ٠to exit  
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*1-227
råèçAs with several catalogs,  
råïç £ 
råîçthe order of each list is  
rüìç í 
råÄçdifferent, but the original
rüÅç Æ 
råÉçdatabase remains unchanged.
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