database

database

1. A data base is a place for infomatipn to be stored and is easy to be accessed to keep it easy to access you should have it organised

2. your age

3. your allergies

4. your homephone number

5. where you live

6. parent names

7. date of birth

8. where you were born

9. past behavior

10. primary shcool

11. attendance

12. past test scores

13. address

14. full name

15. photo of you

16. an example of a database is a search engine and school regester and police data base and library data base

17. Use the Database Categorization dialogue box to create derived categorical variables (as database variables cannot be used directly in table definitions, filters, and tabulation)

18. Advantages Reduced data redundancy Reduced updating errors and increased consistency Greater data integrity and independence from applications programs Improved data access to users through use of host and query languages Improved data security Reduced data entry, storage, and retrieval costs Facilitated development of new applications program

19. Disadvantages Database systems are complex, difficult, and time-consuming to design Substantial hardware and software start-up costs Damage to database affects virtually all applications programs Extensive conversion costs in moving form a file-based system to a database system Initial training required for all programmers and users

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