pdm meaning

After PDM is completed, it will eventually be converted into a database entity.1. Check whether the DBMS set by powerdesigner is correct, that is, whether it is the database type we want to generate. Here I use sqlserver2000:Powerdesigner-> database-> change the current DBMS and select your database type. 2. Configure the connection between powerdesigner and the data sourcePowerdesigner-> database-> Configure connection-> User DSN (or system DSN)-> se

edge of the main clock, and the second microphone is in effect on the falling edge. On non-active edges, the data output is high impedance. The data lines of the two microphones can be simply connected together. The PDM receiver is capable of separating two bitstream streams.DACs and PCM-PDM convertersIn many commercial dacs and in systems where PCM can be converted to

directly in the design environmentThe steps to establish PDM directly in the design environment are as follows:　　1. Select the File->new model in the PowerDesigner main window and select the physical Data model option on the left side of the open creation　　　　2, the meaning of the right option Model name: Names of models; DBMS: Database type, you can also click the following folder button, sele

After PDM is completed, it will eventually be converted into a database entity.1. Check whether the DBMS set by powerdesigner is correct, that is, whether it is the database type we want to generate. Here I use sqlserver2000:Powerdesigner-> database-> change the current DBMS and select your database type. 2. Configure the connection between powerdesigner and the data sourcePowerdesigner-> database-> Configure connection-> User DSN (or system DSN)-> se

First, the PDM model design:1, p is the primary key, M is non-null.2. Link Association3, reference foreign keytwo . powerdesign configuration MySQL ODBC1, official website: http://dev.mysql.com/downloads/connector/odbc/download ODBC driver installation;2, Database---Configure Connections---ADD DataSource (Ctrl + N)--Configure connection Properties--OK.three . PDM to SQL file:1. Database-->chang Current DBMS

Option ExplicitValidationmode = TrueInteractivemode = Im_batchDim MDL ' current model' Get the current active modelSet mdl = ActivemodelIf (MDL is Nothing) thenMsgBox "There is no current Model"ElseIf not MDL. IsKindOf (Pdpdm.cls_model) Then ' if it's processing PDM, here's Pdpdm.cls_modelMsgBox "The current model isn't an physical Data model."ElseProcessFolder MDLEnd If' This routine copy name to comment for each table, each column and each view' of

How to Use the PDM (Physical Data Model) of powerdesigner to generate databases and reverse engineering (to generate PDM for existing databases) After PDM is completed, it will eventually be converted into a database entity.1. Check whether the DBMS set by powerdesigner is correct, that is, whether it is the database type we want to generate. Here I use sqlserve

1. Introduction to PDM The physical data model (Physical Data Model) PDM provides the basic elements required for the initial design of the system and the relationship between related elements; the physical design stage of the database must be detailed on the basis of the background design, including the database stored procedures, operations, triggers, views and index tables; Powerdesigner can be us

Development Environment PowerDesigner 15, SQL Server2005 (1) Before generating the PDM diagram in reverse direction, you must create an ODBC data source for the specified database. Take the Windows xp operating system as an example. Select "start"/runtime command, enter odbcad32.exe In the runtime dialog box, and click "OK" to start the data source Manager. (2) In the "ODBC data source Manager" dialog box, click the "add" button. (3) In the pop-up "Cr

The Chinese name of PDM is productdatamanagement ). PDM is used to manage all product-related information. (Including part information, configuration, documentation, CAD files, structures, permission information, etc.) and all technologies related to product-related processes (including process definition and management. Background of PDM generation In the S

Conceptual Data ModelThe conceptual data Model (conceptual data MODEL,CDM): Expresses the overall logical structure of the data, which is independent of any software and data storage structure, that is, it is just a common language for system analysts, application designers, maintenance personnel and users to understand each other. does not target specific database platforms (such as Oracle or SQL Server) and tools (PowerBuilder). The objects contained in the CDM are not usually implemented in t

1. Introduction to PDM The Physical Data Model (Physical Data Model) PDM provides the basic elements required for the initial design of the system and the relationship between related elements; the physical design stage of the database must be detailed on the basis of the background design, including the database stored procedures, operations, triggers, views and index tables; PowerDesigner can be used to c

converter, it determines that it must occupy a certain amount of space and consume a certain amount of power in the system. Therefore, in system solutions that require convenient portability, the static D/A converter has to be replaced with [1].So people choose the so-called "Digital basis" D/A converter. There are two methods for digital D/A conversion: PWM (P Ulse Width Modulation) Pulse Width Modulation and PDM (pulse density modulation) pulse den

Physical Data Model PDMPhysical data MODEL,PDM: After the logical structure of the database has been designed, the physical design needs to be completed, and PDM is designed to achieve this goal.The physical data model is based on the common DBMS (Database management System) theory, and the real-world model established in CDM/LDM generates the corresponding DBMS's SQL language script. The SQL script is used

1. Introduction to PDM The Physical Data Model (Physical Data Model) PDM provides the basic elements required for the initial design of the system and the relationship between related elements; the physical design stage of the database must be detailed on the basis of the background design, including the database stored procedures, operations, triggers, views and index tables; PowerDesigner can be used to c

Label:Some time ago with the next powerdesigner do some auxiliary work, here specifically summarized: For the migration of the SQL between the CDM, PDM, SQL and database tables between different databases, the first thing to know is what they are used for, a simple description here, not a detailed explanation. CDM: Conceptual data Model. CDM is to describe the E-r diagram in its own way.It does not take into account the physical implementation details

Label: For the migration of the SQL between the CDM, PDM, SQL and database tables between different databases, the first thing to know is what they are used for, a simple description here, not a detailed explanation. CDM: Conceptual data Model. CDM is to describe the E-r diagram in its own way. It does not take into account the physical implementation details, only represents the overall logical structure of the database, independent of any software a

Forward Engineering: PDM ---> in SQL or database projects, we often need to generate SQL scripts based on PDM and execute them together in the database. If there are many tables in PDM, it will take a lot of time for us to build one by one. We can also directly generate PDM to the database as needed. Reverse Engineerin

Use the reverse engineering of powerdesigner to generate PDM Source: 51cmm. com Author: Xu yixiao In the data modeling process, we establish a conceptual data model, generate a physical data model through a forward project, generate a database creation script, and finally generate a relational database from the physical data model. System database designers hope to seamlessly integrate database desi

What is PDM: Product Data Management manages design, R D, manufacturing, and other data. The Design and R D data must be synchronized with the manufacturing data, which must be paperless. Data managed by PDM includes: Design Information of CAD, cam, and CAE-bom, configuration file, and design File MRP and CAD Synchronization Process Information: workflow, approval relationship, etc. What do