help to view/edit database table

documentation/07 _ View-Edit Database Tables.help.md

+# View/Edit Database Tables 
+
+To view/edit database a table, select the table in database menu.
+<br />
+<br />
+<img alt="Database Menu" src="images/database_tables/database_menu.png" width="250" />
+<br />
+
+---------------------------
+---------------------------
+## Plot Types Table
+
+List all types of plotting and description. This table is readonly.
+<br />
+<br />
+<img alt="Plot Types Table" src="images/database_tables/plot_types.png" width="590" />
+<br />
+
++ Fields' meaning:
+    + Plot Type: Name of the plotting type
+    + Description: Describing how the channel will look like and the format of the ValueColors if applicable.
+<br />
+
+## Parameters Table
+
+List all parameters available.
+<br />
+<br />
+<img alt="Parameters Table" src="images/database_tables/parameters.png" width="590" />
+<br />
+
++ Depend on the PlotType entered, ValueColors will be applied for the parameter or not. If ValueColors is available, there will be some hint for values to entered in grey color.
++ To add a new row to the table, click on ADD ROW button.
++ To save any changes to database, click on SAVE CHANGES. If ValueColors isn't applicable, the field will be cleared; otherwise it will be validated at this point.
++ To close the dialog, click on CLOSE. User will be asked to confirm closing if there have been any changes made.
++ Fields' meaning:
+    + No.: Line number, start with 0.
+    + Param: Parameter's name.
+    + Plot Type: Define how to plot the parameter. Description of Plot Type can be found in Plot Types Table.
+    + ValueColors: mapping between values and colors or dot/line and color, or simply color of dots in the plots
+    + Height: Height of plot in compare with other plots.
+<br />
+
+## Data Types Table
+
+List all data types available in which Default is the datatype for DEFAULT channel to draw any channels that aren't defined in database.
+<br />
+<br />
+<img alt="Data Types Table" src="images/database_tables/data_types.png" width="590" />
+<br />
+
++ To add a new row to the table, click on ADD ROW button.
++ To save any changes to database, click on SAVE CHANGES.
++ To close the dialog, click on CLOSE. User will be asked to confirm closing if there have been any changes made.
+<br />
+
+## Channels Table
+
+List all channels available for the selected Data Type on the left-top corner.
+<br />
+<br />
+<img alt="A Row of SOH List" src="images/database_tables/channels.png" width="590" />
+<br />
+
++ To add a new row to the table, click on ADD ROW button.
++ To save any changes to database, click on SAVE CHANGES.
++ To close the dialog, click on CLOSE. User will be asked to confirm closing if there have been any changes made.
++ Fields' meaning:
+    + No.: Line number, start with 0.
+    + Channel: Channel's name.
+    + Label: Displayed with the channel to explain the meaning of the channel.
+    + Param: To describe what kind of parameter the channel is. How the channel is plotted depends on this field.
+    + ConvertFactor: To convert from value read to actual display.
+    + Unit: The unit of the displayed value for the channel.
+    + FixPoint: Decimal point to display the value.
++ Channels that aren't defined in database will be draw with DEFAULT channel defined in Data Type Default.
+<br />
+<br />
+<img alt="DEFAULT channel" src="images/database_tables/default_channel.png" width="590" />
+<br />