Library management information system

1 demand analysis ii

1. 1 system background analysis II

1.2 book management business flow chart 4

1.3 data flow chart 7

1.4 data dictionary 1 1

1.4. 1 data item description 1 1

1.4.2 data structure

1.4.3 data flow description

1.4.4 Processing logic description 20

1.4.5 data storage description 23

1.4.6 Description of external entity 25

2 Conceptual model design 25

2. 1 Entity Diagram 25

2.2 Entity-Contact Figure 27

2.3 Database conceptual model 28

3 logical model and physical model design 28

3. 1 Conversion of database conceptual model to relational model 28

3.2 Database Physical Model 29

4 database implementation and operation 29

4. SQL statement generated by129

5 references 33

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