# Data Generator

#### Scenarios

During the functional testing of a program, a large amount of test data complying with specific rules needs to be inserted into the database. DAS allows you to automatically, efficiently generate test data based on specific rules.

#### Procedure

1. On the top menu bar, choose Data Scheme > Data Generator.
2. On the displayed page, click Create Task. In the displayed dialog box, configure the required parameters.

   - Rows to Generate

     A maximum of 1,000,000 rows of data can be generated.

   - Conflict Policy

     If you select Skip, the system skips data rows in conflict and continues generating data. If you select Replace, the system replaces existing rows with new ones that have the same primary key.

   - Generation type

     You can set the rules for randomly generated data based on the column settings. For example, if the column type is time, you can set the start time, end time, and format, or set the value to the current time.

3. Click Preview to check whether the generated data is as expected. If not, modify the settings. Then, click Generate. Alternatively, directly click Generate.
4. In the task list, locate the created task and click Details. You can also delete the task as required.

Parent topic: Data Scheme