Working with Local File to DB Process

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Working with Local File to DB Process

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Process Purpose

 

The "Local File to DB" process is used to import data (insert records) from a data file into a database table located in a specific Host server.

 

The remote database profile you create within MCL-Designer V4 is responsible for the direct communication between your MCL-Designer project and a remote database.

Once the project is loaded into a device, that same profile can be used to allow communication between the device and the remote database/host server, via MCL-Net. Therefore, make sure that the connection string of the selected profile includes an OLE DB provider that is compatible with the intended remote database. Ex: If you intend to use an Oracle database, select a remote database profile with the corresponding Oracle OleDB driver.

 

 

The file used in the import local file into remote database process MUST have record separator “CR+LF” to allow a successful import into the remote database.

 

 

When you add a process, you are required to define its settings. This occurs in the process's properties window which is displayed automatically after having added the "Local File to DB" process. The properties window includes two tabs - "General" and "Advanced".

If any subsequent edition is required, double-click the process to open its properties window and enter the necessary modifications.

 

"General" tab

 

 

Fill in the following options:

 

Host Name & Data Source

Host Name

Select a host profile from the drop-down OR  click to create a new host profile or edit an existing one.

See To Create a Host Profile OR To Edit a Host Profile OR The <Default> Host Profile.

 

As an alternative, you can use a variable to define the Host Name (use the "Variable Select" option that is accessed if you right-click this box).

See The Use of a Variable to Define a Host Name.

Data Source

Select the database for the import from the drop-down OR  click to add one. See To Add a Data Source to MCL-Designer V4.

 

As an alternative, you can use a variable to define the data source (use the "Variable Select" option that is accessed if you right-click this box).

See The Use of a Variable to Define a Data Source.

 

Before using the “Variable Select” alternative, consider your choices in the “Remote Database” tab (see Remote Database tab in "Project Properties"):

If the “SQL Commands option” is set to “2. Server (Save SQL statement into MQD file for server)", the “Variable Select” option is NOT applicable/supported.

 

Insert into ‘table’ (DB Fields…) values (…)

Table Name

Select the table that will receive the imported records from the drop-down.

As an alternative, you can use a variable to define the Table Name (use the "Variable Select" option that is accessed if you right-click this box).

See The Use of a Variable to Define a Data Source.

Local File Name

Select the source data file that contains the records to import from the drop-down. If needed, click to edit the data file. See Editing a Data File.

 

The data file you define as the data source for the data import into the target remote database MUST have a “CR+LF” record separator.

 

DB Field Name column

Select the field(s) that will receive the imported records from the drop-down.

Value/Variable column

Select the data file value OR  click and select a variable with that value. You can insert records with up to 80 values at once. See Variable Usage.

 

Use the editing icons to the right of the table to move the rows up and down and to delete or add more rows.

 

Click Here for an Example

 

Go to the "Advanced" tab.

 

"Advanced" tab

 

 

If … Go to

DB Error

Select a target location from the drop-down or the list, if an "ODBC Error" occurs. See Detail of a window below.

 

When defining a screen as a target destination (ex: via a “Go to” process), you CANNOT use variables to specify the name of that target screen. You must select the intended screen from the available drop-down/list.

Comm Error

Select a target location from the drop-down or the list, in case there is a communications error. See Detail of a window below.

 

When defining a screen as a target destination (ex: via a “Go to” process), you CANNOT use variables to specify the name of that target screen. You must select the intended screen from the available drop-down/list.

 

SQL request name (Must be unique)

Name

Define a unique name for the SQL request. One is always suggested.

 

Detail of window:

 

 

"S:Menu" is a screen included in the same program as the process.

"R:Routine_1" is a routine included in the same program as the process.

 

 

If required, use the following recurring icons on the properties window:

 

Used to set up a time out. See Time Out.

 

Used to create a new data file. See Creating a Data File.

 

Used to edit a data file. See Editing a Data File.

 

Used to test SQL scripts. See To Test SQL Scripts

 

Use the icon to attach any relevant notes to this process. Click it and enter your notes in the resulting text box. These notes will be displayed in the corresponding "Actions" tab or "Process" window (in the "Notes" field) and in the "Developer Report".

 

 

After filling in the required options, click to conclude or to abort the operation.

The added process is displayed in the corresponding "Actions" tab or "Process" window.

 

You can use relative paths to refer the file(s) you want to use in your project. See Working with Aliases.

 

 

If you want to use a label as a target destination, you can use the "Auto-Label" mechanism. This alternative to the "Set Label" process allows you to create a label in the properties window of a process - specifically, in the fields used to define target destinations (ex: the "If Error..." type fields). See To Automatically Create a Label.

 

 

Use the right-click in MCL-Designer's input boxes to access some related options as well as the general "Cut", "Copy"; "Paste"; "Search" actions (active/inactive according to the current context).

Ex: If you right-click the "Variable" input box (included in a "Conversion's" properties window), you are provided with general editing/search actions and other more specific options such as "Variable Select" (see "Variable Select"); "Variable Insert" (see "Variable Insert"); "Insert Special Character" (see To Insert Special Characters into a Control's Text Input Field) and "Localization Select" (see Localization List).

If you right-click another input box, it may provide other possibilities.