# Understanding Data Requests for Onchain Delivery

<figure><img src="/files/uTxxq9VAUX7WwYtYwOJg" alt=""><figcaption></figcaption></figure>

1. Developers [build and deploy a new Oracle Program](/home/technology/seda-network-architecture/seda-core.md) to the SEDA Network, **OR** access [existing Oracle Programs](/home/technology/seda-network-architecture/seda-core/seda-core-infrastructure-overview/send-your-first-data-request.md) and post/trigger requests using the Oracle Program ID
2. A data request starts a life-cycle via either a **Push Solver** triggering the request on predefined intervals, or a **Pull Solver** watching for published data requests.
3. The Push and Pull Solver post data requests to the SEDA Network for processing. A data request has an ID that matches the Oracle Program ID ensuring it is executed according to the correct computation logic.&#x20;
4. An Overlay Network queries data sources listed in the execution phase of an Oracle Program returning raw data via a commit-reveal scheme to a data Tally Module.&#x20;
5. The Tally Module applies the computation logic in the tally phase of an Oracle Program such as VWAPs, TWAPs, or any other custom logic embedded.&#x20;
6. A single consumable data result is returned to the SEDA Chain for batching and tamper-proof resistance is applied.&#x20;
7. The data result is relayed back to the Prover Contract on the target chain via Solvers where it can be consumer by User Contracts reading the SEDA Prover.&#x20;


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