# "Employee Onboarding" DVR

Fortunately, Namaste Tech is very committed to protecting the privacy of its employees. It has developed the “My Namaste” App based on the zkPass Proof-as-a-Service architecture, which allows third-party entities to examine users’ information without compromising confidential information.

Taking the Proof Verifier role, Namaste Tech needs to create a [DVR](https://gl-docs.gitbook.io/zkpass/getting-started/key-concepts/dvr) to query the blood test results of the incoming new employee.

## <mark style="color:blue;">Query</mark>

Namaste Tech defines the “Employee Onboarding” DVR Query for user Jane Doe as follows:

{% tabs %}
{% tab title="Human Readable" %}
Do all of the following conditions hold true?

1. Is the lab's ID exactly "QH801874"?
2. Is the test ID exactly "SCREEN-7083-12345"?
3. Does the subject's first name match "jane" (case insensitive) ?
4. Does the subject's last name match "doe" (case insensitive) ?
5. Is the subject's date of birth exactly "1985-12-12"?
6. Is the level of amphetamines measured in panels (in Ng/mL) exactly zero?
7. Is the level of cocaine measured in panels (in Ng/mL) equal to or less than 10?
   {% endtab %}

{% tab title="zkPass Query" %}
{% code lineNumbers="true" %}

```json
[
  {
    "assign": {
      "blood_test_status": {
        "and": [
          {
            "==": [{ "dvar": "lab.ID" }, "QH801874"]
          },
          {
            "==": [{ "dvar": "testID" }, "SCREEN-7083-12345"]
          },
          {
            "~==": [{ "dvar": "subject.firstName" }, "jane"]
          },
          {
            "~==": [{ "dvar": "subject.lastName" }, "doe"]
          },
          {
            "==": [{ "dvar": "subject.dateOfBirth" }, "1985-12-12"]
          },
          {
            "==": [{ "dvar": "measuredPanelsNgML.amphetamines" }, 0]
          },
          {
            "<=": [{ "dvar": "measuredPanelsNgML.cocaine" }, 10]
          }
        ]
      }
    }
  },
  { "output": { "title": "Blood Test Result" } },
  { "output": { "result": { "lvar": "blood_test_status" } } },
  { "output": { "name": { "dvar": "subject.firstName" } } }
]
```

{% endcode %}
{% endtab %}
{% endtabs %}