.DMD 文件扩展名

SQL Developer Data Modeler File

开发者 Oracle
受欢迎程度
3.7  |  11 
 

什么是 DMD 文件?

File created by Oracle SQL Developer Data Modeler, a program used for designing structured data models such as relational database schemas; stores the data structure and relationships and can be displayed visually in software.

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DMD files are used for storing the designed the data model as well as for assisting in the generation of the final database.

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可打开 DMD 文件的程序

分类: 开发者
更新时间: 2012-12-13

dBASE Data Module

开发者 dBASE
受欢迎程度
2.0  |  1 
 

A DMD file is a data module created by dBASE, an IDE with database management capabilities. It is similar to a dBASE Form (.WFM file) but only stores data objects, including Database, Query, Session, and StoredProc objects. Data modules allow dBASE users to save objects in one container, which is helpful when re-using a set-up in a different context (e.g., re-using a set of tables from a report in a form).

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在 dBASE 2019 中打开的 .dmd 文件截图
在 dBASE 2019 中打开的 DMD 文件

dBASE is a Windows application with various features for managing databases and building and compiling programs. Some advantages of data modules include:

  • Not needing to duplicate data access components in different contexts (e.g., reports, forms, etc.).
  • Designing queries once instead of recreating them repeatedly.
  • Separating different types of code for organizational and maintenance purposes.

如何打开 DMD 文件

You can open DMD files with dBASE in Windows. For example, you can open a DMD file by selecting File → Open.

Opening a DMD file with a text editor

DMD file open in Microsoft Notepad
DMD file open in Microsoft Notepad

Since DMD files contain plain text, you can also open the files with a text editor, such as Microsoft Notepad (Windows) or Apple TextEdit (Mac). You may need to rename the .dmd file extension to .txt for the text editor to recognize it.

When opened in a text editor, you can modify the source code in the data module. However, it will not appear the same as if you open the file with dBASE. Also, incorrectly editing the file will corrupt the data module.

可打开 DMD 文件的程序

Windows
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分类: 开发者
更新时间: 2024-02-08

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