Transcription of 02. File Structures - cs.kangwon.ac.kr
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02. File Structures - cs.kangwon.ac.kr
1 (Advanced Data Structures )(Advanced Data Structures )File StructuresFile Structures20062006 Page 2 Advanced Data Structuresby Yang-Sae MoonFile Structures File Structures (Ch. 1 in ) (Ch. 2 in ) (Ch. 3 in ) (Ch. 4 in ) , concept (O/S Device Dependent )File Structures2 Page 3 Advanced Data Structuresby Yang-Sae Moon (Information) (Data)File Structures (data) (processing) (information)(Computer)(in disk, tape, ..)DII = P(D)P Object = Variables(Attributes or Data) +Methods(Processing Mechanism)Page 4 Advanced Data Structuresby Yang-Sae Moon (1/2)(1/2) (field), (attribute), (item) ( : , ) (object, entity) (table) attribute (record type) ( ) ( : = {.)}
4 Page 7 Advanced Data Structures by Yang-Sae Moon 트랜잭션파일(transaction file) • 마스터파일의변경내용을모아둔파일혹은
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