Object Identities

Here is a table of different object types and the properties that could be used to uniquely identify the objects.

Object Type	Identity
File	MD5 hash
Study / Project	hash of study_title+study_type+submitter_email
Experiment	hash of experiment_title+study_ref
Sample	hash of alias+center_name
Analysis	hash of alias+center_name+analysis_center
Run	hash of alias+center_name+run_center+experiment_ref
Array	N/A
EGA Dataset	hash of alias+center_name+TITLE
Policy	hash of alias+center_name+dac_ref.accession
DAC	hash of alias+contacts.email
Variant region	N/A
Variant	hash of assembly_version+chromosome/contig+pos+ref+alt
Node	hash of node_name+hosting_location