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INTRODUCTION TO DATABASE MANAGEMENT l
History of Database Management
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application attributes B-tree candidate key COBOL CODASYL column command COMMRATE contains create credit limit CREDLIM CUSTADDR CUSTNUMB CUSTNAME customer 124 CUSTOMER CUSTNUMB customer number CUSTOMER table data dictionary database design dBASE DBDL DBMS DBMS's delete DEPTCODE DEPTNUMB discussed DL/I DLT CSCD employee entity environment example FACNUMB faculty member field foreign key IDMS information-level design ITEMCLSS language Mary microcomputer normal form null number and name NUMBORD ORDDTE order lines ORDLNE ORDNUMB PARTDESC PARTNUMB Pine,Ada,MI pointers Premiere Products primary key problem query QUOTPRCE record CUSTOMER record type relational algebra relational model relationship relative record requirements retrieve sales rep number Sally screen second normal form segment occurrence shown in Figure SLSRADDR SLSREP SLSRNAME SLSRNUMB specific stored structure student STUNUMB subschema third normal form tion transaction UNONHAND update user view WRHSNUMB