資源描述：
《《會(huì)考今日電腦》PPT課件》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在教育資源-天天文庫(kù)。
1、第3章數(shù)據(jù)和資訊處理DataandInformationProcessingS.4-5CS&ITCECourse中四及中五電腦與資訊科技會(huì)考課程1CUHKFAAThomasCheungSecSch數(shù)據(jù)處理DataProcessing排序Sorting合併Merging檢索Searching更新Updating2CUHKFAAThomasCheungSecSch排序Sorting按某種次序來(lái)排列Arrangingdatainacertainorder例如：以下的記錄是按照學(xué)生姓名的筆劃數(shù)目順序排列e.g.therecordsbelowaresortedinalphabeticalorder
2、ofstudentnames數(shù)據(jù)處理DataProcessing3CUHKFAAThomasCheungSecSch合併Merging合併是把兩個(gè)檔案的內(nèi)容合併成一個(gè)檔案Mergingcombinesthecontentsoftwofilestoformonefile4CUHKFAAThomasCheungSecSch合併MergingNameClassNoStudentIDTelAmy4B198120924483111Fiona4B298153222445559Ben4B398345624454746David4B498321223456789NameClassNoStudentIDT
3、elAda4C198120824444111Cindy4C299112129875432Eva4C399341129814632Tina4C498452221453467+NameClassNoStudentIDTelAmy4B198120924483111Fiona4B298153222445559Ben4B398345624454746David4B498321223456789Ada4C198120824444111Cindy4C299112129875432Eva4C399341129814632Tina4C4984522214534675CUHKFAAThomasCheungS
4、ecSch檢索Searching檢索是指確定記錄在檔案中的位置Searchingreferstolocatingarecordinafile6CUHKFAAThomasCheungSecSch檢索SearchingNameClassNoStudentIDTelAmy4A298120924483111Ben4A2298345624454746Fiona4B998153222445559…David4D2298321223456789Searching檢索：Fiona7CUHKFAAThomasCheungSecSchUpdating更新插入新記錄Insertnewrecords刪除記錄De
5、leterecords修改不正確的記錄Amendincorrectrecords8CUHKFAAThomasCheungSecSch插入InsertionNameClassNoStudentIDTelAmy4A298120924483111Fiona4B998153222445559David4D2298321223456789NameClassNoStudentIDTelAmy4A298120924483111Fiona4B998153222445559David4D2298321223456789Ben4A22983456244547469CUHKFAAThomasCheungSec
6、Sch刪除DeletionNameClassNoStudentIDTelAmy4A298120924483111Ben4A2298345624454746Fiona4B998153222445559David4D2298321223456789NameClassNoStudentIDTelAmy4A298120924483111Fiona4B998153222445559David4D229832122345678910CUHKFAAThomasCheungSecSch修改AmendmentNameClassNoStudentIDTelAmy4A298120924483111Fiona4
7、B998153222445559David4D2298321223456789NameClassNoStudentIDTelAmy4A298120924483111Fiona4B998153221903219David4D229832122345678911CUHKFAAThomasCheungSecSchNameClassNoStudentIDTelAmy4B198120924483111Fiona4B29815322244555
