STAR Model from OO/ODBMS Perspective
RAW, DST, ?DST structures become objects or object collections contained (via references) in a top-level event object, all managed (with calibration data as well) by a single ODBMS.
Key feature is ability to retrieve any object just by following the reference; great data management and bookkeeping simplification
Blurs (but doesn’t eliminate) distinction between DST and ?DST; where ?DSTs reuse objects from the DST or other ?DSTs, the objects are not duplicated but are simply used (referenced) in both contexts.
An event-level object in a DST or ?DST collection references upstream raw and DST-level objects such that they can be retrieved as needed (‘lookback’) by following a ‘smart pointer’, even though the ?DST, DST and RAW objects may exist at different sites.
- Possible implementation is assembly of a list of object references for the desired objects, and submission of the list as a query to the RCF-based ‘storage manager’ (cf. Grand Challenge talk) managing data retrieval
- Doesn’t require live local connection to database, and allows storage manager to coordinate efficient access