《会考今日电脑》.ppt

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1、第3章數據和資訊處理DataandInformationProcessingS.4-5CS&ITCECourse中四及中五電腦與資訊科技會考課程1CUHKFAAThomasCheungSecSch數據處理DataProcessing排序Sorting合併Merging檢索Searching更新Updating2CUHKFAAThomasCheungSecSch排序Sorting按某種次序來排列Arrangingdatainacertainorder例如：以下的記錄是按照學生姓名的筆劃數目順序排列e.g.therecordsbelowaresortedi

2、nalphabeticalorderofstudentnames數據處理DataProcessing3CUHKFAAThomasCheungSecSch合併Merging合併是把兩個檔案的內容合併成一個檔案Mergingcombinesthecontentsoftwofilestoformonefile4CUHKFAAThomasCheungSecSch合併MergingNameClassNoStudentIDTelAmy4B198120924483111Fiona4B298153222445559Ben4B398345624454746David4B

3、498321223456789NameClassNoStudentIDTelAda4C198120824444111Cindy4C299112129875432Eva4C399341129814632Tina4C498452221453467+NameClassNoStudentIDTelAmy4B198120924483111Fiona4B298153222445559Ben4B398345624454746David4B498321223456789Ada4C198120824444111Cindy4C299112129875432Eva4C399

4、341129814632Tina4C4984522214534675CUHKFAAThomasCheungSecSch檢索Searching檢索是指確定記錄在檔案中的位置Searchingreferstolocatingarecordinafile6CUHKFAAThomasCheungSecSch檢索SearchingNameClassNoStudentIDTelAmy4A298120924483111Ben4A2298345624454746Fiona4B998153222445559…David4D2298321223456789Searchin

5、g檢索：Fiona7CUHKFAAThomasCheungSecSchUpdating更新插入新記錄Insertnewrecords刪除記錄Deleterecords修改不正確的記錄Amendincorrectrecords8CUHKFAAThomasCheungSecSch插入InsertionNameClassNoStudentIDTelAmy4A298120924483111Fiona4B998153222445559David4D2298321223456789NameClassNoStudentIDTelAmy4A29812092448311

6、1Fiona4B998153222445559David4D2298321223456789Ben4A22983456244547469CUHKFAAThomasCheungSecSch刪除DeletionNameClassNoStudentIDTelAmy4A298120924483111Ben4A2298345624454746Fiona4B998153222445559David4D2298321223456789NameClassNoStudentIDTelAmy4A298120924483111Fiona4B998153222445559Da

7、vid4D229832122345678910CUHKFAAThomasCheungSecSch修改AmendmentNameClassNoStudentIDTelAmy4A298120924483111Fiona4B998153222445559David4D2298321223456789NameClassNoStudentIDTelAmy4A298120924483111Fiona4B998153221903219David4D229832122345678911CUHKFAAThomasCheungSecSchNameClassNoStuden

8、tIDTelAmy4B198120924483111Fiona4B29815322244555