abstract database system

基本解释

By the end of this project, you'll have an abstract model of your system, SQL code to build the database, and PHP wrappers for each table.
在结束项目时，您将拥有系统的抽象模型、构建数据库的 SQL 代码和用于每个表的 PHP 包装器。
Abstract:The database system is the core of management information systems, and also the most important applications in many departments such as banks, enterprises, government and so on.
摘要：数据库系统是管理信息系统的核心，是银行、企业、政府等众多部门最为重要的应用。
How to abstract objects from entities of real world is one of the keys to object-oriented database system(OODBS). Implementations of storage, manipulation and management are based on objects in OODBS.
面向对象数据库系统（OODBS）的核心是把现实世界的事物描述为对象，数据存储、操作和管理都以对象为依据。