The DCR is a project under heavy construction. This wiki is a development accompanied to the project.
¶ Digital Certificate Request
The Digital Certificate Request (DCR) is an XML schema based on DX, enabling customers to request a digital certificate for an item or instrument.
¶ Concept
The concept behind this is that a customer can specify their requirements and instruct a laboratory on how they intend to use their item or instrument, as well as the expected results. This allows laboratories to provide certificates based on the DX that meet specific needs and ensure compliance with relevant standards.
¶ Key Features
- The DCR is not limited to calibration only; it serves as a general request form for requesting any type of certificate based on ISO 17025.
- A digital certificate request should include:
- Target points: the specific parameters or characteristics being measured or tested
- Tolerance limits: the acceptable ranges or tolerances for the item or instrument's performance
- Responsible persons: those authorized to use and maintain the item or instrument, as well as any relevant contact information
- Detailed information about the item or instrument being certified:
- Description of the item or instrument, including its purpose and intended use
- Technical specifications, such as dimensions, materials, and operating conditions
¶ Benefits
- The DCR streamlines the certification process by providing a standardized format for requesting certificates.
- It enables laboratories to provide more accurate and relevant certifications that meet specific customer needs.
- By specifying target points, conformity limits, and responsible persons, customers can ensure that their items or instruments are certified in accordance with their intended use.
¶ XML Structure
A Digital Certificate Request has following five child elements:
¶ Description of the elements
See the list of abbreviations here
| Element Element type |
Use | Description |
|---|---|---|
| dcr:administrativeData | [M] | The element administrativeData contains all essential administrative information about the certificate request. |
| dcr:target | [M] | In the target element, all information about the request’s target is provided. For example, it specifies whether the target is a calibration, a verification, or something else. It should also contain the target points and a list of items required for the result. |
| dcr:comment (dx:commentType) |
[O] | All further information and files requested by the client can be inserted into this element. Files of different file formats (e.g. results from spreadsheet programs) are converted using the Base64 method [1] so that they can be saved in the XML structure. They can then be extracted again from the XML structure and converted back identically into the original data format using the Base64 procedure. |
| dcr:prefilledCertificate (dcr:prefilledCertificateType) |
[O] | The "prefilledCertificate" element can contain a prefilled certificate, which serves as a template from the customer. This allows the laboratory to adapt and expand it with the requested values. |
| ds:Signature | [O] | The signature of the DCR document. |