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WHY DATABASE? (Advantages (Enforced standards (No maintenance problems, No…
WHY DATABASE?
Definition
Centralized control of data
Management --> DBA
DBA
Central responsibility
Part of the DB
Database Administrator
Great knowledge and managerial skills
Advantages
Enforced standards
No maintenance problems
No data interchange problems
Security restriction
Authorization checks
Different procedures for different accesses
Data sharing
Integrated files
New apps <--> current database
Data integrity
Validation procedures
Redundancy --> inaccurate data
Elimination of inconsistency
Information --> single entry
Corollary of redundancy
Balancing of conflicting requirements
Overall service
Provision of data independence
Reduction of redundancy
One file, many apps
Data sharing