HDFEOS DataBlade

1
HDF-EOS DatabladeEfficiently Serving Earth
Science Data
2
What is a Datablade?
3
What does the HDF-EOS Datablade provide?

• Inventory management of large volume data and
  metadata
• Flexible access to the data as a file or
  Binary-Large-Object inside the database.
• Cross-granule searching and subsetting
• Re-use other datablades such as spatial search
  tools from Informix
• Implements Grid subsetting operations in the
  Database

4
Plans for the Second Year

• Implement Swath, Point, HDF datatypes
• General subsetting tool stored queries
• Metadata search and query tools
• Implement MISR Quality-Assessment database

5
HDF-EOS Datablade Software Architecture
Informix DB
Granules in File System
HDF-EOS C library (Unchanged)
SQL Inter- face and API
SQL Inter- face
File I/O Emulator
Valuable Data Exposed in Searchable Tables
Granules in Informix
6
Overlapping Granule Scenario
90
Subset Lat 65 to 75 Lon 15 to 25
80
70
60
Latitude
50
0
40
1
30
2
20
3
10
4
Longitude
50
10
90
70
30