Article: Cross Domain Spatial Data Infrastructure: Chris Tucker looks at Spatial Data Infrastructure implementation across domains.

For years, the same spatial data has been repeatedly replicated and hosted on multiple security domains so that users with different security authorizations could access it. This has led to complicated and costly schemes for upward and downward synchronization of data. Moreover, It has required the acquisition of multiple hardware and software instances, for which each required individual operations and maintenance (O&M) budget.

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Interoperable Solution

The emergence of label secure database technology, sophisticated high assurance security appliances as well as changes in security policy now make it possible to avoid such costly ...

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