Database Processing: Fundamentals, Design, ImplementationInformation Systems -- Database Management. |
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Page 8
... file processing systems . If a member were to change his or her name or address , then all files containing that data need to be updated . The danger lies in the risk that all files might not be updated , causing discrepancies between the ...
... file processing systems . If a member were to change his or her name or address , then all files containing that data need to be updated . The danger lies in the risk that all files might not be updated , causing discrepancies between the ...
Page 632
... processing . Note that if the message FILE TOO DENSE is written , it means that too many synonyms have been generated in one area . The file should be made larger and the address computation should be modified . Actually , for this type ...
... processing . Note that if the message FILE TOO DENSE is written , it means that too many synonyms have been generated in one area . The file should be made larger and the address computation should be modified . Actually , for this type ...
Page 633
... file organization for that application . However , for database process- ing , direct files are currently the most widely used . With direct file processing , different types of data records can be stored in the same file . Their ...
... file organization for that application . However , for database process- ing , direct files are currently the most widely used . With direct file processing , different types of data records can be stored in the same file . Their ...
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Common terms and phrases
1:N relationships Activity advisor Application Development application programs APPOINTMENT attributes binary relationships cation changes Chapter Class COBOL components constraints contains CUSTOMER data dictionary data items database administration database application database design database processing database system dataflow diagram DBMS engine DBMS products define delete DEPARTMENT object display DK/NF documentation domain definitions domain/key normal form EMPLOYEE entity example faculty file processing systems foreign key format fourth normal form functional dependency identify implementation interface invoice logical Major many-to-many menus meta-data microcomputer modification anomalies modify multi-user multivalued dependencies object diagrams object instance object property operations overhead data personnel phase problem query relational model represent requirements SALESPERSON Samantha schedule screen second normal form shown in Figure Sname stored structure STUDENT data STUDENT object student records Student-ID subschema system development third normal form tion transaction processing programs tuple update user's