eva/3 Application BuilderDeveloping eva/3 ApplicationsWorking with DatabasesTableCreate Table 

Data Column Definition

The wizzard page Data column definition allows to create, edit and delete the columns of the table. The settings on this wizzard page comply to the settings on the edit page Table columns in the Table Editor

Fig. 25: Data column definition
Fig. 25: Data column definition

The following entries are available:
Columns List of the columns to be created, to edit the selected column
Add Adds a new column to table
Delete Deletes the selected column
Name The name of the selected column
Type The data type of the selected column
Default The default value when creating a new data record
Null values allowed Defines whether the column can contain null values
Autoincrement Defines, whether the column gets an autmatically generated value when creatin a new data record
Decimal places The count of decimal places at numeric data types
Length Defines the maximum length of the value that can be entered in the field
Back Provides the previous page of the wizzard
Next Provides the next page of the wizzard
Finish Creates the table. This option is only available when all needed informations about the table are entered on all pages
Cancel Cancels the creation process and returns to the application