Import wizard for tab separated lists

With this import routine, you can import data from text files (as tab-separated lists) into the database. Choose Data -> ImportWizard and then the type of data that should be imported, e.g. Import Taxa ... from the menu. A window as shown below will open that will lead you through the import of the data. The window is separated in 3 areas. On the left side, you see a list of possible data related import steps according to the type of data you choosed for the import. On the right side you see the list of currently selected import steps. In the middle part the details of the selected import steps are shown.

Choosing the File

As a first step, choose the File from where the data should be imported. The currently supported format is tab-separated text. Then choose the Encoding of the file, e.g. Unicode. The Start line and End line will automatically be set according to your data. You may change these to restrict the data lines that should be imported. The not imported parts in the file are indicated as shown below with a gray background. If the First line contains the column definition this line will not be imported as well. If your data contains e.g. date information where notations differ between countries (e.g. 31.4.2013 - 4.31.2013), choose the Language / Country to ensure a correct interpretation of your data. Finally you can select a prepared Schema (see chapter Schema below) for the import.

Choosing the data ranges

In the selection list on the left side of the window (see below) all possible import steps for the data are listed according to the type of data you want to import.

The import of certain tables can be paralleled. To add parallels click on the button (see below). To remove parallels, use the button. Only selected ranges will appear in the list of the steps on the right (see below).

To import informations of logging columns like who created and changed the data, click on button in the header line. This will include a additional substeps for every step containing the logging columns (see below). If you do not import these data, they will be automatically filled by default values like the current time and user.

Attaching data

You can either import your data as new data or Attach them to data in the database. Select the import step Attachment from the list. All tables that are selected and contain columns at which you can attach data are listed (see below). Either choose the first option Import as new data or one of the columns the attachment columns offered like SeriesCode in the table Series in the example below.

If you select a column for attachment, this column will be marked with a blue background (see below and chapter Table data).

Merging data

You can either import your data as new data or Merge them with data in the database. Select the import step Merge from the list. For every table you can choose between Insert, Merge, Update and Attach (see below).

The Insert option will import the data from the file independent of existing data in the database.

The Merge option will compare the data from the file with those in the database according to the Key columns (see below). If no matching data are found in the database, the data from the file will be imported, otherwise the data will be updated..

The Update option will compare the data from the file with those in the database according to the Key columns. Only matching data found in the database will be updated.

The Attach option will compare the data from the file with those in the database according to the Key columns. The found data will not be changed, but used as a reference data in depending tables. 

Table data

To set the source for the columns in the file, select the step of a table listed underneath the Merge step. All columns available for importing data will be listed in the central part of the window. In the example shown below, the first column is used to attach the new data to data in the database.

A reminder in the header line will show you what actions are still needed to import the data into the table:

• Please select at least one column   = No column has been selected so far.
• Please select at least one decisive column   = If data will be imported depends on the content of decisive colums, so at least one must be selected.
• Please select the position in the file   = The position in the file must be given if the data for a column should be taken from the file.
• Please select at least one column for comparision   = For all merge types other than insert columns for comparision with data in the database are needed.
• From file or For all   = For every you have to decide whether the data are taken from the file or a value is entered for all
• Please select a value from the list   = You have to select a value from the provided list
• Please enter a value   = You have to enter a value used for all datasets

The handling of the columns in described in the chapter columns.

Testing

To test if all requirements for the import are met use the Testing step. You can use a certain line in the file for you test and then click on the Test data in line: button. If there are still unmet requirements, these will be listed in a window as shown below.

If finally all requirements are met, the testing function will try to write the data into the database and display any errors that occurred as shown below. All datasets marked with a red background, produced some error.  

To see the list of all errors, double click in the error list window in the header line (see below).

If finally no errors are left, your data are ready for import. The colors in the table nodes in the tree indicate the handling of the datasets: INSERT, MERGE, UPDATE, No difference. Attach, No data. The colors of the table colums indicate whether a colum is decisive , a key column or an attachment column .  

If you suspect, that the import file contains data allready present in the database, you may test this an extract only the missing lines in a new file. Choose the attachment column (see chapter Attaching data) and click on the button Check for allready present data. The data allready present in the database will be marked red (see below). Click on the button Save missing data a text file to store the data not present in the database in a new file for the import. Please keep in mind, that this comparision will be performed without any transformations of the data, that means the data in the file must match exactly those in the database. 

Import

With the last step you can finally start to import the data into the database. If you want to repeat the import with the same settings and data of the same structure, you can save a schema of the current settings (see below).