# 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](https://docs.violetlabs.com/features/scripts "mention") to get *oh so fresh* analyses at your fingertips.
Explore [connect-your-data](https://docs.violetlabs.com/integrations/connect-your-data "mention") to see what types of data you can connect.
### Create a Single Source-of-Truth for Critical Design Data
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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](https://docs.violetlabs.com/apps/s/solidworks-pdm "mention") and [onshape](https://docs.violetlabs.com/apps/o/onshape "mention") \
**- Simulation results from** [scripts](https://docs.violetlabs.com/features/scripts "mention") **in** [matlab](https://docs.violetlabs.com/apps/m/matlab "mention")**,** [python](https://docs.violetlabs.com/apps/p/python "mention")\
**- Part data from PLM/PDM systems like** [teamcenter](https://docs.violetlabs.com/apps/t/teamcenter "mention")**,** [duro](https://docs.violetlabs.com/apps/d/duro "mention") \
**- 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file) automatically propagates to all dependent parameters and analyses, preventing design decisions from being made on outdated numbers.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](https://docs.violetlabs.com/features/scripts "mention") 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.
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### Power your VCRM with Parameters and Requirements
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Parameters can link directly to math-aware [requirements](https://docs.violetlabs.com/features/requirements "mention") allowing a dynamic look at your compliance as well as a link to your verification artifacts.
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### Explore Parameters-Related Features
