Liren Large Software Subsidy 5

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*105010 C15,3 x╨Ç√ rââ√─ räâ° Session 1 ∙ What is a database? rºâ√ ¿─ rüä√ ╨ rüà√ ╨ rüå√ ö r╛å√ Ä räç≡┌ è─┐ rÆç±┌ ¬─┐ räê≡│ ràêÉ è rÅê≡│ rÆê±│ In addition to data on books, the ê │ räë≡│ ràëÉ BOOK rÅë≡│ rÆë±│ library also keeps data on each borrower:│ räè≡│ ràèÉ è rÅè≡│ rÆè±│ ä Name, Address, Telephone number, å │ räï≡│ ràïÉ data rÅï≡│ rÆï±│ ä and Social Security number î │ räî≡│ ràîÉ è rÅî≡│ rÆî±│ ¬ │ räì≡└ è─┘ rÆì±│ The BOOK data and the BORROWER data are │ rÆÄ±│ kept in separate files. Æ │ rÆÅ±└ ¬─┘ q╧ÿ√P,2,,,,, a1,P,,,,,, *105020 C14,0 r┴ç≡┌ è─┐ r┴ê≡│ r┬êÉ è r╠ê≡│ r┴ë≡│ r┬ëÉ BORROWER r╠ë≡│ r┴è≡│ r┬èÉ è r╠è≡│ r┴ï≡│ r┬ïÉ data r╠ï≡│ r┴î≡│ r┬îÉ è r╠î≡│ r┴ì≡└ è─┘ q╧ÿ√P,1,,,,, a1,P,,,,,, *105030 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,, *105050 C14,1 röê±A third type of data maintained by the röë±library is ON LOAN data. æ röè± ú röï±The call number of the book on loan röî±is matched with the borrower's röì±Social Security number. æ röÄ± Ö ríÉ≡┌ è─┐ ríæ≡│ róæÉ è r¼æ≡│ ríÆ≡│ róÆÉ ON LOAN r¼Æ≡│ ríô≡│ róôÉ è r¼ô≡│ ríö≡│ róöÉ data r¼ö≡│ rÆò≤Call number r₧òα ä─ è ä─ r▒ò≤SS number ríû≡└ è─┘ q╧ÿ√S,,,,,, QC1 a7,G,,,,,, a8,P,,,,&H0D,, a8,C,D002,,,&H003F,, *105060 C14,1 röê±With dBASE IV, the library can link röë±data in the BOOK file with data in röè±the BORROWER file by using the data röï±in the ON LOAN file. É röî± ₧ röì± Ü r¬ÿ╗ ª q╧ÿ╗P,2,,,,, a1,P,,,,,, *105070 C12,0 r╟«α│ rë«α│ rëÅα│ r╟Åα│ r╟░α│ rë░α│ rëæα│ r╟æα│ r╟▓α│ rë▓α│ rëôα│ r╟│α│ r╟öα│ rë┤α│ rëòα└ r╟╡α┘ r╞òα─ rè╡α── r┼╡α─ r─òα─ rî╡α── r├╡α─ r┬òα─ rÄ╡α─ r┴╡α─ r└òα─ rÅ╡α─ r┐╡α─ r╛òα─ rÉ╡α─ r╜╡α─ r╝òα─ r╗╡α─ q╧ÿ√P,2,,,,, a1,P,,,,,, *105080 C14,1 r¬ÿ± Press r▒ÿß─┘ r┤ÿ± to continue or r─ÿßF5 r╞ÿ± to exit q╧ÿ±S,,,,,, QC1 a7,G,,,,,, a8,P,,,,&H0D,, a8,C,D002,,,&H003F,, *105090 C14,1 röê±The library can mail overdue notices röë±on books identified by their call à röè±numbers, to borrowers identified by ä röï±their Social Security numbers. ê r║î± q╧ÿ√S,,,,,, QC1 a7,G,,,,,, a8,P,,,,&H0D,, a8,C,D002,,,&H003F,, *105100 C15,3 rüå√ ╧ rüç√ ╧ rüê√ ╧ rüë√ ╧ rüè√ ╧ rüï√ ╧ rüî√ ╧ rüì√ ╧ rüÄ√ ╧ rüÅ√ ╧ rüÉ√ ╧ rüæ√ ╧ rüÆ√ ╧ rüô√ ╧ rüö√ ╧ rüò√ ╧ rüû√ ╧ rüù√ ╧ rüÿ√ ╧ q╧ÿ√P,1,,,,, a1,P,,,,,, *105110 C14,1 rïë±┌ ╖─┐ rïè±│ You have completed Session 1 - What is a database? │ rïï±│ ╖ │ rïî±│ rÄîßPress S ròî± to view the summary. Ö │ rïì±│ ╖ │ rïÄ±│ rÄÄßPress ─┘ rùÄ± to go on to Session 2 - dBASE IV basics. │ rïÅ±│ ╖ │ rïÉ±│ rÄÉßPress F5 rûÉ± to return to the Main Menu. æ │ rïæ±└ ╖─┘ q╧ÿÅS,,,,,, QC1 a7,G,,,,,, a8,C,D201,,,&H0D,, a8,C,D1SU,,,&H73,, a8,C,D1SU,,,&H53,, a8,C,D002,,,&H003F,,