Setting up a data quality check

The DQC Platform allows you to define custom data quality rules for each table. These rules help detect invalid values and ensure consistency across your datasets — either globally or per segment.

You can create new rules from several different tabs within a table:

Available in:
Overview, Rules, Issues, Sample, Profiling

Click “Add new rule” in the top-right corner of any tab

Alternatively, start with the DQ-AI-Assistant on the right part of the screen

Create a rule using the DQ-AI Assistant

The DQ-AI Assistant is always visible on the right-hand side of the screen. It allows you to create rules by typing in a natural-language prompt.

Steps

1. Enter a rule description such as:
   “Contract Number should be mandatory”

2. The assistant will respond with:

   • A short explanation

   • A Rule preview button

1. Click “Rule preview”
   → The rule will be inserted into the form

2. Optionally refine the rule settings (e.g., filters, segmentation, tags)

3. Click “Add rule” to confirm

The preview is fully editable before saving

Define the rule manually

If you already know the logic, define your rule using the form fields:

Required

• Columns – Select the column(s)

• Condition – Choose a condition depending on column type

Optional

• Categories – Adjust how empty values are interpreted (e.g., NULL, pseudo blanks)

• Filters – Limit the rule scope

• Segmentation – Apply the rule individually across groups

• Name, description and tags – Add metadata for better structure

Notes

• Each rule is stored in the Rule Repository

• You can edit, deactivate, or delete rules at any time

• Learn more: Rule Creation via DQ-AI Assistant, Filters , Working with the Rule Detail Screen