Table of contents
Abstract- 2 -
1 Introduction 1
1.1 Research background and significance of the subject 1
1.1.1 Research background of the subject 2
1.1.2 Research significance of the subject 2
1.2 Feasibility analysis 3
1.2.1 Economic feasibility 3
1.2.2 Technical feasibility 3
1.2.3 Operation feasibility4
1.3 Introduction to each chapter of the thesis4
2 Demand analysis6
2.1 Business flow analysis6
2.2 Data flow analysis8 2.3
Data dictionary8
3 System design11
3.1 System design idea11
3.2 System function module division12
4 Database design13
4.1 Database Requirements Analysis13
4.2 Database Conceptual Structure Design13
4.3 Database Logical Structure Design14
5 Management Module Interface Design16
5.1 System Login Interface Design17
5.2 Administrator Homepage Design17
5.3 System User Management18
5.4 Personnel Information Management Page19
5.5 Income Tax Management Page 20
Conclusion 21
Acknowledgments 23
References 24
4 Database Design
4.1 Database Requirements Analysis
The needs of users are embodied in the provision, storage, update and query of various information, which requires the database structure to fully meet the input and output of various information. Collect basic data, data structure and data processing process to form a detailed data dictionary, laying the foundation for the specific design later.
Through the analysis of system functions, the following requirement information is summarized for the law firm information management system:
1) The user is an administrator user;
2) After logging in, the administrator user can maintain administrator information, machine owner information and business record information .
After system function analysis and demand summary, considering future functional expansion, the following data items and data structures are designed:
1) Administrator information, including data items: account number, password, authority, etc.
2) Organization information, including data items: ID, name, address, etc.
3) Business information, including data items: serial number, owner's name, price, etc.
4.2 Conceptual structure design of the database
After obtaining the above data items and data structure, various entities that can meet the needs of users and the relationship between them can be designed to lay the foundation for the subsequent logical structure design. These entities contain various specific information, and form the flow of data through mutual interaction.
The entities designed and planned are: administrator information entity, community information entity, income tax information entity, and building information entity.
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