Liren Large Software Subsidy 5

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Text File | 1993-03-09 | 3.1 KB | 222 lines

*102010 C15,3 x╨Ç√ rââ√─ räâ° Session 1 ∙ What is a database? rºâ√ ¿─ rçë±┌ ╖─┐ rçè±│ The data in the card catalog is constantly increasing │ rçï±│ as new books are added to the collection. ì │ rçî±│ ╖ │ rçì±│ The data is stored on cards so that changes can be ä │ rçÄ±│ made easily. New cards can be added in order, and ä │ rçÅ±│ old cards can be replaced with new ones. Ä │ rçÉ±└ ╖─┘ r¬ÿß Press ─┘ r┤ÿ± to continue or r─ÿßF5 r╞ÿ± to exit q╧ÿ√S,,,,,, QC1 a7,G,,,,,, a8,P,,,,&H0D,, a8,C,D002,,,&H003F,, *102020 C14,1 rëè±The card catalog does have restrictions, though. å rëï± ¬ rëî±If the library needs a list of all its books è rëì±published in 1955, searching through all the è rëÄ±cards and writing a list would be long and î rëÅ±tedious job. ¥ q╧ÿ±S,,,,,, QC1 a7,G,,,,,, a8,P,,,,&H0D,, a8,C,D002,,,&H003F,, *102030 C14,0 r┤å≡ Book data IN d╗çÉ rªë±─┐ r¿ë╗ ï r│ëç æ rëè±If the library used dBASE IV │ r¿è╗ ï r│èç r┤èÉ Ä r┬èç r├èτ. rëï±to store its data instead of │ r¿ï╗ ï r│ïç r┤ïÉ r╖ï╨dBASE IV r┐ïÉ r┬ïç : rëî±the card system, you could ä │ r¿î╗ ï r│îç r┤î╕ r╡îÉ ì r┬îç rëì±create lists of books by å │ r¿ì╗ ï r│ìç r┤ìÉ å r║ì≡ r╗ìÉ ç r┬ìç - rëÄ±dates, titles, and authors, │ r¿Ä╗ ï r│Äç æ_ rëÅ±quickly and efficiently. å │ r¿Å╗ ê r░Å╖ r▒Åç■ r▓Å╖ ò rªÉ±─┘ r¿É╗ ê r░É╖ å│ r╣É░ ╞═█═╡ r┐É╕ r└É░╞═█═╡ r╞É╖ r░æ╕ ù▀ r╗ÆÉ r░ô╗ è r╗ôÉ r╝ô╗ ë r»ö° Organized information OUT q╧ÿ√S,,,,,, QC1 a7,G,,,,,, a8,P,,,,&H0D,, a8,C,D002,,,&H003F,, *102040 C7,3 r┤å╗ ô r┤ç╗ ô r┤ê╗ ô rúë±┐ rñë╗ ú rëè±New lists could be made rúè±│ rñè╗ ä r¿è≡┌ è─┐ r┤è╗ ô rëï±from the original data rúï±│ rñï╗ ä r¿ï≡│ è │ r┤ï╗ ô rëî±as they are needed. ç │ rñî╗ ä r¿î≡│ r⌐îÉ BOOK r│î≡│ r┤î╗ ô rëì± Ö rúì±│ rñì╗ ä r¿ì≡│ r⌐ìÉ data r│ì≡│ r┤ì╗ ô rëÄ± Ü │ rñÄ╗ ä r¿Ä≡│ è │ r┤Ä╗ ô rëÅ± Ü │ rñÅ╗ ä r¿Å≡│ è │ r┤Å╗ ô róÉ±─┘ rñÉ╗ ä r¿É≡│ è │ r┤É╗ ô rëæ╗ ƒ r¿æ≡└ è─┘ r┤æ╗ ô r╗Æ╗ rëô╗ É r╗ô╗ r»ö╗ ¢ rªÿ╗ ¬ q╧ÿ╗P,2,,,,, a1,P,,,,,, *102050 C2,0 r¿àÉ┌ ¥─┐ r¿åÉ│ r⌐å≡ Alphabetical list by author r╞åÉ│ r¿çÉ└ ¥─┘ d«êÉ││ q╧ÿ√P,2,,,,, a1,P,,,,,, *102060 C2,0 r╕ëÉ┌ ô─┐ r╕èÉ│ r╣è≡ Alphabetical list r╦èÉ │ r┤ïÉ ä─│ r╣ï≡ by subject ê r╠ïÉ│ r╕îÉ└ ô─┘ q╧ÿ╕P,2,,,,, a1,P,,,,,, *102070 C2,0 r╕ÄÉ┌ æ─┐ r┤ÅÉ ä─│ r╣Å≡ Numeric list ä r╩ÅÉ│ r╕ÉÉ│ r╣É≡ by call number r╩ÉÉ│ r╕æÉ└ æ─┘ q╧ÿ╕P,2,,,,, a1,P,,,,,, *102080 C2,0 d▒ÆÉ││ r¼öÉ┌ û─┐ r¼òÉ│ r¡ò≡ Numeric list by date r├òÉ│ r¼ûÉ└ û─┘ q╧ÿ√P,2,,,,, a1,P,,,,,, *102090 C12,1 r¬ÿß Press ─┘ r╡ÿ±to continue or r─ÿßF5 r╞ÿ± to exit q╧ÿ±S,,,,,, QC1 a7,G,,,,,, a8,P,,,,&H0D,, a8,C,D002,,,&H003F,, *102110 C2,0 r¬åÉAlphabetical list by author rëè±Each list is organized r║èÉAlphabetical list rëï±differently, but the à r║ïÉby subject rëî±original data remains r¬î≡ BOOK rëì±unchanged. Å r¬ì≡ data r║ÅÉNumeric list r║ÉÉby call number r«òÉNumeric list by date q╧ÿ√S,,,,,, QC1 a7,G,,,,,, a8,C,D103,,,&H0D,, a8,C,D002,,,&H003F,,