# National Data Exchange **Domain:** Austin Research / Surveillance **Doc Type:** Research entity **Source basis:** Supplied essay and the specifically identified records; verification scope is recorded in [[wiki/Austin Surveillance Evidence Ledger|the evidence ledger]]. The **National Data Exchange (N-DEx)** is the FBI criminal-justice information-sharing system referenced in the Austin surveillance essay’s federal network map. Texas DPS provides a state-facing participation and submission route, and NCIS describes contemporary interoperability between N-DEx and [[wiki/LInX|LInX]]. Its historical status in the DHS LEIS briefing is particularly important: **N-DEx appears among agreements expected in FY2010**, below the list containing an existing MOU with **LEAP (NCTCOG)**. The briefing therefore distinguishes a planned federal link from a reported existing regional partner. A later description of an operational N-DEx interface should retain its own date and source. For the wiki, N-DEx is the national exchange node that helps readers follow the widening network without flattening agreement, implementation, and actual use into one event. Austin’s 2012 LEAP authorization supplies an entry into a federally interfaced environment; it does not itself enumerate every federal database accessible to each city account. ## Connected entries [[wiki/LInX|LInX]] · [[wiki/Texas Data Exchange|Texas Data Exchange]] · [[wiki/DHS Law Enforcement Information Sharing Service|DHS Law Enforcement Information Sharing Service]] · [[wiki/Nlets|Nlets]] · [[wiki/Law Enforcement Analysis Portal|Law Enforcement Analysis Portal]] ## Sources and corpus context - [[research/The Austin Surveillance Field|The Austin Surveillance Field]] - [DHS — Law Enforcement Information Sharing Service briefing, slides 4–16; existing MOUs on slide 15](https://info.publicintelligence.net/DHS-LEISS.pdf) - [NCIS — LInX/D-DEx, sponsorship, participation, and N-DEx interoperability](https://www.ncis.navy.mil/About-NCIS/Mission/Partnership-Initiatives/LInX-D-DEx/) - [Texas DPS — National Data Exchange](https://www.dps.texas.gov/section/crime-records/national-data-exchange-n-dex) **Cluster:** [[wiki/Austin Surveillance Field|Austin Surveillance Field]] · [[wiki/Austin Executable Loop|Austin Executable Loop]] · [[wiki/Austin Surveillance Evidence Ledger|Austin Surveillance Evidence Ledger]]