oracle cdm data model

I. Define entities Double-click the object symbol to go to the object attribute page. 1. General Project Name: identifies an object in the model and is generally used for displaying the model on the interface (this can be changed by changing the option settings ). In a model, Entity names cannot be repeated. Code: the physical name of an object during

The concept data model (ConceptualDataModel) is also called the information model. It is based on the object-link theory and expanded. The concept Data Model (Conceptual Data Model) is

In PD, the CDM model is created. A digoal has two tables, and the fields cannot be repeated? Tool-model options-model settings remove the unique code under data item There is also a "allow reuse" check box. We recommend that you remove this check box. In the future, don'

In the process of writing documents, there must be a system database design. How should we design the database? First, let's explain a concept: CDM: The concept Data Model (CDM) is used to design the process from the concept layer. In the concept layer, you do not need to consider the actual physical implementation det

Using PowerDesigner reverse engineering to guide the data Model diagram is very convenient, take Powerdesigner11 and Oracle8i as an example (other versions slightly different) The basic steps are as follows: 1, open or create a new Physicaldatamodel file (. pdm), (the DBMS is Sybase as Anywhere 9, or a DBMS that can select its own version of the database in the Drop-down list, such as

Label:First, the conceptModel Model: A model that describes relational data. is a set of data stores that are stored in a specific technology, such as Oracle. For example, when the technology is Oracle, the scheme corres

1, access to the operating system management tools2. Select the ODBC data source "32-bit or 64-bit"3, the list is the current database existing data source, right click the Add button, add the appropriate data source4. Select the ODBC driver for the connection database in the list "Here I want to connect MySQL, so to choose MySQL ODBC Driver", double-click Driver

The data schema is also a model, which is the form of a database of operational means for providing information representation, and is a tool used in databases to surprise the real world. The data model is divided into 3 types according to different application levels, namely conceptual

Oracle JET Application data can come from any WEB data source that generates JSON data, such as REST services, Server send events (SSE), or WebSocket. In addition, Oracle JET provides specific support for integrated Web services data