The main window of the program is divided into two areas: on the left is the navigation menu between the different sections, while in the central part is the area where the data of the selected section are displayed.

Depending on the type of section, the data can be displayed in different ways. For example, it can be displayed in tabular mode on a calendar or on a geographical map. There are also special sections such as the Dashboard, Options and Reports.

Depending on the license installed and if permitted in the section, on each item of the navigation bar the button for the display of archives and trash management panel will be available.

Selecting the Complete List item will display all the data in the table.

Selecting the item Trash or one of the archives will display the data belonging to the set.

From this panel you can also create archives using the Add button. Please note that for each table there cannot be two files with the same name.

At the top right are the buttons for creating a new tab, cloud synchronization and the help button.

Pressing the New Tab button will bring up a menu containing all the tabs that can be created by the user.

The Synchronization button shows all the functions for cloud management, such as actual data synchronization, subscription renewal, etc.

If the database is local, the program will ask if the user wants to upgrade to the cloud version. If so, you will be asked for your account details if they haven’t been entered yet, and whether you would like to try it for free for one month or purchase a subscription.

Please note that when the cloud subscription expires, the user will still be able to continue to use the database data, but synchronization on D-One's servers will be blocked.

Depending on the type of license and database configuration, there may be buttons for managing reminders and executable scripts from the appropriate menu of choice.

Finally, on the left side inside the colored band, there is the button to select the database to open or to create a new one.

The quick buttons for creating the registry are at the bottom right.

Immediately below the seed of the database is the name of the user and how many minutes of assistance you have available.

On the right side are the special section buttons.

From left to right there are buttons for Options, Reports, My D-One and AddOns.

The Options button loads the section on all program and database settings. Depending on the type of user, you will see all settings, only the data settings or none at all.

The Report button opens the section on all data analysis reports. Please note that you can add or modify existing reports through via the options.

The My D-One button opens the section showing all the packages and licenses that can be installed on the database. The section is used to exchange these packages between users and D-One.

The AddOns button opens the catalog section of add-ons that can be installed on the current database. These components can be of various types and are installed directly into the database. Please note that after installation it won’t be possible to remove them because they permanently change the data structure.

This interface is essentially identical for the OSX and web version as well. The mobile and tablet version is slightly different in order to be optimized for phones and small format displays.

In the mobile version the navigation menu between the sections is normally hidden. To open it just press on the icon on the top left with three lines (“hamburger” icon). To open the database selection menu instead just use the arrow icon placed on the colored band with the name of the database.

The Notifications button (depending on the purchased license), opens the side panel where it can be managed.

The memos are divided into three panels so that they can be quickly filtered according to their date. Both the reminders generated by the tabs in the tables and those generated directly by the user are shown.

You can create a reminder unrelated to the data tables by pressing the Add button.