# Parameters

Establish a live data backbone for your engineering workflows. Stop chasing down key values in siloed tools and give your team a single, authoritative source for the data that drives your design.

Start using parameter sets to keep track of the data you care about or pair them with [Scripts](/features/scripts.md) to get *oh so fresh* analyses at your fingertips.

<figure><img src="/files/NZYPpk5X7e3td3AmcReY" alt=""><figcaption></figcaption></figure>

Explore [Connect your data](/integrations/connect-your-data.md) to see what types of data you can connect.

### Create a Single Source-of-Truth for Critical Design Data&#x20;

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Connect Parameters to live data from your most important engineering tools, eliminating manual data entry and stale information.

**Link directly to values from integrated sources like:** \
**- Component mass from CAD like**[Solidworks PDM](/apps/s/solidworks-pdm.md) and [Onshape](/apps/o/onshape.md) \
**- Simulation results from** [Scripts](/features/scripts.md) **in** [MATLAB](/apps/m/matlab.md)**,** [Python](/apps/p/python.md)\
**- Part data from PLM/PDM systems like** [Teamcenter](/apps/t/teamcenter.md)**,** [Duro](/apps/d/duro.md) \
**- and more.**
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* Help your team view product data without overpaying for access to expensive engineering tools
* Define values manually for static inputs, then seamlessly update them to a live link as your design matures
* Organize your parameters into parameter sets and folders intuitively.

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### Build an Authoritative and Interconnected Data Model

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Use Parameters to represent key performance indicators (KPIs), technical budgets (mass, power, cost), and other critical system values that are **authoritative** and **interconnected**.
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* Create a web of data where a change in one source (like a CAD file) automatically propagates to all dependent parameters and analyses, preventing design decisions from being made on outdated numbers.
* Easily view live updates by subscribing to parameter sets and getting notifications when your watched items change
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### Power Live Scripts and Automate Analysis

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Use Parameters as direct inputs for live scripts that run automatically when underlying data changes.

**Trigger complex calculations, trade studies, and analyses without manual intervention.**
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* Create the parameters you'll use for your analysis. Fill in values manually or link them directly to any Violet entity's data.
* Open [Scripts](/features/scripts.md) and create variables that are linked to parameters (inputs or outputs).
* Write your analysis code in Matlab, Python, or Julia.
* Set the script to "live" and get automatic updates when the results are updated.&#x20;
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### Power your VCRM with Parameters and Requirements

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Parameters can link directly to math-aware [Requirements](/features/requirements.md) allowing a dynamic look at your compliance as well as a link to your verification artifacts.
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![](/files/Ojzw45erGBHi5voMUnTj)
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### Explore Parameters-Related Features

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