Technical Docs

Current

SPOT Grid Reference System (GRS)
Spatial footprint visualization
Type assertions in Python
Middleware development notes
Universal bucket schema
Middleware development plan
Architecture diagram (.gif)

Old but still somewhat relevant

Spatial similarity functions
Simple SQL-based text search
An experiment in metadata mapping
ADN metadata mapping
Geospatial DL components (.gif)
Simple geometry language
Dublin Core explorer
External object identifier scheme

Ancient history

User interface functional areas (.gif)
Object-oriented ADL interface
"Personal, distributed collections" proposal
Simple Ingest Protocol (SIP)
SDLIP evaluation
The ADL Catalog, a representative collection
Middleware-gazetteer integration (.gif)
DOQQ ingest process (.gif)
DOQQ file format
Web interface functional specification
Logging architecture
Operational tasks
Server-side architecture