• Installing a local HFSQL server.
• Creating an application that uses an HFSQL Client/Server database.
• Adapting an application to support an HFSQL Client/Server database.
• Features available in Client/Server mode.

	Estimated time: 10 mn

1. Start the WINDEV/WEBDEV/WINDEV Mobile setup program.
2. Select "Install HFSQL Client/Server".
3. Then, select "Install or update an HFSQL server".
4. Accept the license agreement.
5. Select a platform ("For Windows on this computer").
6. If there are HFSQL servers already installed on the current computer, select "Install a new server".
7. Select the setup directory and specify the server name and port. The port 4900 will be used by default.
   

   	Note	Don't forget to open this port on the firewall in order to connect to the HFSQL server from another computer.
8. Specify the login credentials of the user with administrator privileges that will be created by default on the HFSQL server. By default, this user is "Admin" and has no password.
   

   	Note	For security reasons, don't forget to change the administrator password.
9. Install the HFSQL Control Center if it is not already installed or cannot be accessed from your computer.
   

   	Caution!	The HFSQL Control Center is required to manage the HFSQL Client/Server database.
10. The wizard prompts you to configure the sending of notifications to identify server problems in real time. In this case, go to the next step and indicate that the settings will be defined "Later".
11. The wizard allows you to enable the Active Directory authentication. Enable this option if necessary.
12. You can help us improve by allowing us to collect information regarding the use of our products. This optional and anonymous data collection allows PC SOFT to improve its products.
13. The setup is completed. By default (if you have not changed the administrator settings), to connect to the server in administrator mode, you must use the "Admin" user without password.

1. Create the project with a new database.
2. Create the analysis by specifying that the databases used by the project will be "HFSQL Client/Server" databases.
3. Specify the characteristics of the connection to the HFSQL Client/Server server that will be used.
4. When creating a data file in the analysis, indicate that this data file is in Client/Server mode and specify the connection used.

	Note	You can also define the connection to the HFSQL server programmatically. For more details, see the online help: HDescribeConnection.

Overview

• from the data model editor.
• from the HFSQL Control Center.

Adapting the example

• Open the project you worked on in the previous lesson.
  1. Go to the WINDEV home page (Ctrl + <).
  2. On the home page, click "Tutorial", then in "Part 5 - Manage an HFSQL Client/Server database", double-click "Full application (Exercise)".
  3. A dialogue box prompts you to open the project you worked on in the previous lesson. You can open the local copy or the original project. Select "Open the local copy".

	Answers	A corrected project is available. This project allows you to perform the different operations in this lesson. To open the corrected project, go to the home page and click "Tutorial", then in "Part 5 - Manage an HFSQL Client/Server database", double-click "Full application (Answers)".

• To adapt the project:
  1. In the "Project explorer" pane, select the "Windows 32-bit executable" configuration.
  2. Load the analysis of your project in the data model editor: click in the quick access buttons. The data model editor is displayed.
  3. On the "Analysis" tab, in the "Connection" group, click "New connection". A wizard opens, allowing you to create a connection.
  4. Select the type of connection to create: "HFSQL Client/Server".
     
  5. Go to the next step.
  6. In the following steps, specify:
     
     • the server name (name of your computer for example) and the port number.
     • the username and password (leave these fields empty to log in as administrator) .
     • the database name (in this case, "WD Full Application").
     • the name of the connection (keep the default name).
  7. Go to the next step and validate. The connection to the database is automatically created. A dialog box prompts you to associate the different data files from the analysis with the connection that was just created.
     
  8. Click "Yes".
  9. In the next step, select all the data files:
     
     Go to the next step.
  10. A dialog box prompts you to copy the data files to the server. Validate ("Copy now").
      
  11. Select the analysis data files to be copied to the server: in our case, all data files in the EXE directory.
      
  12. Go to the next step and validate.
  13. The data files in the analysis are automatically changed into HFSQL Client/Server data files and associated with the selected connection.
      
  14. Generate the analysis: on the "Analysis" tab, in the "Analysis" group, click "Generation". An automatic modification of the data files is automatically proposed. If all the data files are up to date, the automatic modification of the data files can be canceled.
      

      	Note	Switching to Client/Server mode: tips Check the code of your project: in HFSQL Client/Server mode, the HSubstDir statements, ... are useless. You can modify the connection defined in the analysis with HOpenConnection and HChangeConnection according to the parameters specified when it was created. HOpenConnection is used to go back to HFSQL Classic mode: simply specify the path of the directory containing the HFSQL Classic data files.
  15. The development project was successfully adapted. You may also have to adapt the deployed application (e.g., if the deployed application uses HFSQL Classic data files). This operation is configured when creating the setup program of the application.

• Transactions,
• Logs,
• Stored procedures,
• Triggers,
• Hot automatic data modification,
• Hot reindexing,
• Scheduled backups,
• Incremental backups,
• Universal replication.