I am using a common function to execute all the sqlite queries in the class. Everything works fine until I use a for loop with multiple items in the list. This is a commonly used function for exec
Month: September 2021
PowerDesigner generates an Excel version of the database file
To convert the database design to an excel version, Baidu will publish a script file, which is easy to use and find out, keep a memorial
In pd, shift+ctrl+X, open the script to run, the scrip
Several common modeling tools (Rose, PowerDesigner, Visio)
1, ROSE
< /span> ROSE is directly developed from UML The birth of the design tool, it appeared to support UML modeling, ROSE did not support the database-side modeling at the beginning, but the
PowerDesigner (8) – Model Document Editor (Generate Project Documentation)
The original text is from: http://www.voidcn.com/article/p-uoilqgur-oy.html
The Model Report of PowerDesigner is a model-based, project-oriented overview document. It provides a flexible and
SQL file in PowerDesigner, database table reverse generation PDM
1 Reverse PDM generation 1) Create an empty PDM model (select the corresponding DBMS) :
2) Select [Database]–[Update Model from Database…] menu:
1) In the new window, select the cor
PowerDesigner generates automatic identification of mysql statements, Name, and comments
When using PowerDesigner to design the ORACLE library table in the past, it is very convenient to generate the SQL statement to build the table. There is an option, which means that when the COMMEN
How to use the SQLite connection in the Asset folder
How to use the SQLite connection in the Asset folder. This is called DataBaseHelper. java file
public class DataBaseHelper extends SQLiteOpenHelper
{
private static String TAG = “TAG”;
pri
Good and fake, also –PowerDesigner
[PowerDesigner]
Very good database design Tools, used before, let’s summarize today.
PowerDesigner is a powerful software capable of database design. It is a database modeling tool comm
How to add foreign keys to an existing SQLite table?
I have the following table:
CREATE TABLE child(
id INTEGER PRIMARY KEY,
parent_id INTEGER,
description TEXT); How to add foreign key constraints on parent_id? Assume that foreign keys are enabled.
Most examples assume that you are creating a table-I want to add constraints to an existing table.
PowerDesigner Using Tutorials (Text Tutorial)
1. Now start using PowerDesigner to create a database, first run the program and enter the main interface:
2.File—New Model—Physical Data Model—Physical Diagram—Model name< /strong> is set to