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Logical Database Design

?????????? 2 ????????????????????????????. 2. ????????????. ?????????????????????????????????????? (file processing systems) ?????????????????????? (database systems) ??????????????????????????????????????????????? (database management system- DBMS) ???????????????????????????????????????????????

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Logical Database Design

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    1. ?????????? 2 ???????????????????????????? 1 ?????????????????????????????? Logical Database Design

    2. ?????????? 2 ???????????????????????????? 2 ???????????? ?????????????????????????????????????? (file processing systems) ?????????????????????? (database systems) ??? ???????????????????????????????????????????? (database management system- DBMS) ??? ????????????????????????????????????????????? ?????????????? entities, fields, records, files, tables, ??? key fields ??????????????????????????????????????? ??????????????????????????????????? entity-relationship diagram : E-R Diagram) ??????????????? cardinality, cardinality notation, ??? crow’s foot notation ?????????????????????????????????????????????????????????????????????????????????????????????? ?????????????? normalization ?????????????????????????????? first, second ??? third normal form

    3. ?????????? 2 ???????????????????????????? 3 System development life cycle with logical design phase highlighted

    4. ?????????? 2 ???????????????????????????? 4 ???????????????????????????? ???????????????????????????? ?????????????? (file processing systems) ??????????????????????????????????????????????????? ????????????????????????? ?????????????????????????????????????????????????????????????????????????????????????????????????????????????? ?????????????????????????????????????????????????????????????????????????? 3 ????????????? (COBOL) ???????????(FORTAN) ???????????? (BASIC) ?????? ( C )

    5. ?????????? 2 ???????????????????????????? 5 file processing systems

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