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Preparing for BIT – IT2301 Database Management Systems 2001b

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Gihan Wikramanayake
Gihan Wikramanayake

Preparing for BIT – IT2301 Database Management Systems, on Rupavahini by Gihan Wikramanayake, 03rd May 2001, 2200-2215 hrs.

EducaciónTecnologíaEmpresariales
1 de 21
IT2301 Database Management Systems [email_address] PREPARING FOR THE BIT Preparing for BIT 03/05/2001
Today’s Agenda ,[object Object],[object Object],[object Object]
BRIEF SYLLABUS ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
BRIEF SYLLABUS cont. ,[object Object],[object Object],[object Object],[object Object]
Introduction to DBMS - OBJECTIVES ,[object Object],[object Object],AFTER SUCCESSFULLY COMPLETING THIS SECTION STUDENTS SHOULD BE ABLE TO:
Introduction to DBMS - OBJECTIVES ,[object Object],[object Object],AFTER SUCCESSFULLY COMPLETING THIS SECTION STUDENTS SHOULD BE ABLE TO:
Introduction to DBMS - OBJECTIVES Computer Terminals Printer DBMS Application Program Database Data Dictionary/Directory User Programmer/Analyst Administrator hardware, software, data and people
Introduction to DBMS - OBJECTIVES cont. ,[object Object]
Introduction to DBMS - OBJECTIVES cont. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Introduction to DBMS - OBJECTIVES cont. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Introduction to DBMS - OBJECTIVES cont. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Traditional File Environment ,[object Object],[object Object]
Conventional File Systems ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
a) Program-data dependence is the close relationship between data stored in files and the software programs that update and maintain those files.
Program-data dependency ... Any change in data organisation or format requires a change in all the programs associated with those files. e.g. Payroll dept. use a data file containing information on employee names, addresses and salaries .
Program-data dependency ... ,[object Object],[object Object],[object Object]
b) Data Redundancy ,[object Object],[object Object],[object Object],[object Object],[object Object]
e.g. Benefits application program ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],e.g. Personnel application program ,[object Object],[object Object],[object Object],e.g. Payroll application program data files data files data files Application a Application i Application z
Data Redundancy cont. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Database Approach DBMS data files ,[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],Application i Application z Application a
Introduction to DBMS - OBJECTIVES cont. ,[object Object]

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ICT ප්‍රාරම්භක ඩිප්ලෝමා පාඨමාලාව දිනමිණ, පරිගණක දැනුමICT ප්‍රාරම්භක ඩිප්ලෝමා පාඨමාලාව දිනමිණ, පරිගණක දැනුම
ICT ප්‍රාරම්භක ඩිප්ලෝමා පාඨමාලාව දිනමිණ, පරිගණක දැනුම
 
වෘත්තීය අවස්ථා වැඩි පරිගණක ක්ෂේත‍්‍රය දිනමිණ, පරිගණක දැනුම
වෘත්තීය අවස්ථා වැඩි පරිගණක ක්ෂේත‍්‍රය දිනමිණ, පරිගණක දැනුමවෘත්තීය අවස්ථා වැඩි පරිගණක ක්ෂේත‍්‍රය දිනමිණ, පරිගණක දැනුම
වෘත්තීය අවස්ථා වැඩි පරිගණක ක්ෂේත‍්‍රය දිනමිණ, පරිගණක දැනුම
 
පරිගණක ක්ෂේත‍්‍රයේ වෘත්තීය අවස්ථා දිනමිණ, පරිගණක දැනුම
පරිගණක ක්ෂේත‍්‍රයේ වෘත්තීය අවස්ථා දිනමිණ, පරිගණක දැනුමපරිගණක ක්ෂේත‍්‍රයේ වෘත්තීය අවස්ථා දිනමිණ, පරිගණක දැනුම
පරිගණක ක්ෂේත‍්‍රයේ වෘත්තීය අවස්ථා දිනමිණ, පරිගණක දැනුම
 
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Preparing for BIT – IT2301 Database Management Systems 2001b

  • 1. IT2301 Database Management Systems [email_address] PREPARING FOR THE BIT Preparing for BIT 03/05/2001
  • 2.
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  • 7. Introduction to DBMS - OBJECTIVES Computer Terminals Printer DBMS Application Program Database Data Dictionary/Directory User Programmer/Analyst Administrator hardware, software, data and people
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  • 14. a) Program-data dependence is the close relationship between data stored in files and the software programs that update and maintain those files.
  • 15. Program-data dependency ... Any change in data organisation or format requires a change in all the programs associated with those files. e.g. Payroll dept. use a data file containing information on employee names, addresses and salaries .
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