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[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],Name: Barry Harris College: Medicine Tel: 392-5555 Name: Barry Harris ,[object Object],[object Object],Name: Barry Harris College: Medicine Tel: 392-5555
Records Fields Name GatorLink Phone College Graff rgraff 392-3900 Pharmacy Harris bharris 392-5555 Medicine Ipswich zipswich 846-5656 PHHP
 
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
DATABASE DATA DICTIONARY/ DIRECTORY USER PROGRAMMER Data Dictionary/ Directory Subsystem Security and Integrity Subsystem Database Access Subsystem User Query and Reporting Facilities Application Program Development Facilities DBMS USER PROGRAMMER
DATABASE DATA DICTIONARY/ DIRECTORY Application Program Application Program Application Program DBMS Computer Terminals PRINTER Analyst User
[object Object]
Client Client Server TAPE Printer
[object Object],[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],Metadata
E.g.  Data Item Value Name Type Length Min Max Description Name Character 30 Employee Name ID Number 9 Employee No. Dept Character 10 Dept. No. Age Integer 2 18  60 Employee Age Name Character 15 Dept. Name Manager Number 9 Mgr. Emp. No. Employee No. (ID) unique Manager is an employee of the organisation Metadata
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
[object Object],[object Object],[object Object]
[object Object],1 Data items 2 3 4
[object Object],[object Object]
[object Object]
[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
 
Root 1 st  Child 2 nd  Child ,[object Object],[object Object],[object Object],[object Object],[object Object],COMPENSATION ADDITIONAL BENEFITS HEALTH INSURANCE PERFORMANCE RATING SALARY HISTORY
[object Object],[object Object],[object Object],[object Object],[object Object]
 
 
[object Object],[object Object],[object Object]
 
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]

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Database Management Systems: An Overview

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  • 12. Records Fields Name GatorLink Phone College Graff rgraff 392-3900 Pharmacy Harris bharris 392-5555 Medicine Ipswich zipswich 846-5656 PHHP
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  • 16. DATABASE DATA DICTIONARY/ DIRECTORY USER PROGRAMMER Data Dictionary/ Directory Subsystem Security and Integrity Subsystem Database Access Subsystem User Query and Reporting Facilities Application Program Development Facilities DBMS USER PROGRAMMER
  • 17. DATABASE DATA DICTIONARY/ DIRECTORY Application Program Application Program Application Program DBMS Computer Terminals PRINTER Analyst User
  • 18.
  • 19. Client Client Server TAPE Printer
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  • 26. E.g. Data Item Value Name Type Length Min Max Description Name Character 30 Employee Name ID Number 9 Employee No. Dept Character 10 Dept. No. Age Integer 2 18 60 Employee Age Name Character 15 Dept. Name Manager Number 9 Mgr. Emp. No. Employee No. (ID) unique Manager is an employee of the organisation Metadata
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