Research On Database Application System Development's Pinciple And Application Under The Borland Delphi Platform

In recent years,with the development of computer and network technology,the computing environment was trending towards distributed from centralizing. Among these modes,multi-tier distribute's Client/Server and B/S structures mode have been widely adopted in the large-scale application system's design and exploration. Nowadays, the technology of database is the fastest growing, the most widely used and it has became one important branch of computer science and technology, and it is also one important tool of computer information processing and application system development, It is impacting and changeing directly people's work and life. The database application system is one computer application system and it completes the data processed process with the help of computer application technology. Data-processing is the sum of a series of activities,which refers to all forms of data collection,storage,processing and dissemination. Borland Delphi is a powerful,Windows-based environment,object-oriented,visual application development platform because it has a strong capabilities to support database programming. Borland Delphi is one fashion tool for developing the Stand-alone software, C/S and B/S structure application software. Its excellent programming features and rapid development ability of application systems has become the focus of attention.In this Dissertation, some basic theories and principles of database and database application systems are researched.This Dissertation also probed the database system and its data security problems. Finally, we use the technology features of Delphi support Client/Server to develop one database application system, which is use to corporation wage management; it can be as the exploring practice of this project.The following are mainly works of this Dissertation paper:1 Introducing database theory and principle, the concept of databases and database management systems are also introduced. The structures and roles of database system and relational database theory are discussed. The design and process of structure database and data table are showed and the SQL Server basic theory as well as the function and role of SQL are stated.2 Analysing the operating mechanism and relate technologies of Delphi database application systems development. Study Delphi's database accessing and linking mechanism and its core technologies of two-tier and multi-layer model and the operation method of Database and data sheets.3 Researching Delphi's data security problems of database systems, it includes data integrity, consistency and the Encryption of Database.4 Design one management system for corporation wage. In this Dissertation paper, one system of database application for corporation wage is completed. It can be as the practical application of this paper's research results.