SIMPLE DATA BASE MANAGEMENT NOTES
What is the 4V characterizes of BIG Data
01 Volume
02 variety
03 velocity
04 veracity
what the main approach of Database Management?
1 File base approach
2 Database approach
(General purpose)
1 Simplicity
2. Low cost
3 Flexibility
4. Familiarity
1 Data duplicate/ redundancy
2 Data inconsistency
3 scalability limitation
4 Data sharing access control difficulties
5 Data integrity issue / inflexibility
Data base Approach
data base enviranment system
1.Hardware
2. Software
3.People
4.procedure
5.Data
Three-tier Architecture
1.client ---GUI
2.Application or Web server --- web page
3.Database Management System ----DBMS
Three tier Architechure a DBMS
1 Extternal Data
2 Conceptional Data ----- Method and Logic
3 Internal level ------Query lanuge
Data base type
High level conceptional and
Recod base Logical Data Model
High level conceptional
--Entity Relationship Diagrm (ERDIGRAM)
Rocord base Logical data model
numaric ,charactories,
Hirachical model
Network model
Relationship model
Object oriented Model
2. Low cost
3 Flexibility
4. Familiarity
2 Data inconsistency
3 scalability limitation
4 Data sharing access control difficulties
5 Data integrity issue / inflexibility
Data base Approach
data base enviranment system 1.Hardware2. Software
3.People
4.procedure
5.Data
Three-tier Architecture
1.client ---GUI2.Application or Web server --- web page
3.Database Management System ----DBMS
Three tier Architechure a DBMS
1 Extternal Data
2 Conceptional Data ----- Method and Logic
3 Internal level ------Query lanuge
Data base type
High level conceptional andRecod base Logical Data Model
Great work
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