Database --> Generate Database, 弹出如下窗口: Script generation: 是生成SQL 脚本,one file on是否需要按照表生成许多个sql(默认选上,即不需要) Direct generation: 是直接在数据库中执行脚本,这2者只能选一个。 一般直接生成SQL 脚本。 Automatic archive: 生成sql同时生成apm文件。 Check model:powerdesigner...
Physical data model represents how the model will be built in the database. A physical database model shows all table structures, including column name, column data type, column constraints, primary key, foreign key, and relationships between tables. Features of a physical data model include: Sp...
physical data modelrepresents the actual structure of a database—tables and columns, or the messages sent between computer processes. Here the entity types usually represent tables, and the relationship type lines represent the foreign keys between tables. The data model’s structure will often be ...
八、PDM模型检查(Check) 在Tools->Check Model运行模型检查,然后根据检查结果纠正模型。 九、生成数据库(Generate Database) 在Database->Generate DataBase运行生成窗口,根据工作情况设置相关参数。 对于使用PowerBuilder开发的用户,还可以通过Tools->PowerBuilder->Generate PowerBuilder生成相关PowerBuilder扩展的属性。 ...
物理数据模型理论基础powerdesigner中的物理数据模型 Physical Data Model 简称PDM 以常用的38种数据库管理系统 Database Management System简称DBMS 理论为基础 power designer为每一种DBMS产生了一个扩展名为xdb的定义文件 用户还可根据实际需要产生新的DBMS定义文件。当建立新的PDM或由CDM生成PDM时 必须选择一种DBMS的...
The model is an extension of previous work. It is more comprehensive and flexible. It addresses problems that have not been considered in previous models; it integrates into one model aspects that were treated individually before and it produces database access configurations that can work within ...
they relate to one another), then move on to the logical data model (so we understand the details of our data without worrying about how they will actually implemented), and finally the physical data model (so we know exactly how to implement our data model in the database of choice). ...
Data modeling, a process that supports efficient database design and management, involves three stages: conceptual, logical, and physical. The first stage, the conceptual model, defines high-level entities and relationships. The second stage, the logical model, adds technical detail like attributes,...
Describes the Physical Data Model. The Physical Data Model of Oracle Airlines Data Model is the physical manifestation of the logical data model into database tables and relationships (or foreign key constraints). Reference Tables Lists the reference tables in Oracle Airlines Data Model. Base Tables...
This model is generally designed by Business Analysts and Data Architects. Physical Model The physical model defines how to implement a data model with the help of the database management system. It outlines the implementation methodology in terms of tables, CRUD operations, indexes, partitioning, ...