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The Information System
Direct Access Storage Devices
Information Structure and File Organization
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accession number ACCT assigned batch block buffer Cellular Serial chain Chapter complete contains core core memory DATA CONDITIONS descriptors Detail diagram Directory Decoder disjunctive normal form Disk Pack document example Executive file organization file record file structure file system formulations function hardware head disk head of list Hierarchic indicated information structure information system input interrecord processing INVC Inverted List system Key Directory Key Name keys and qualifiers labeled length key line printer link address list length list search list structured logical record magnetic tape Master record memory requirement ment milliseconds Multilist system Name/Value on-line systems operation parameters performed physical record procedure query language query processor random access real-time Reference File RelocationS reserve space retrieval sequence space brooming specific storage stored subfile subrecord Table techniques terminal nodes threaded list three-level tree tion track truncation variable length