Download - Location dependent query processor
Presented by Abhiroop Roy ChowdhuryAditi RoyAffan AhmedAmit SinghAnanya RoyAniket BiswasAnirban Nag
• Introduction• Location based services (LBS)• Location aware query(LAQ)• Location dependent query(LDQ)• LDQ processing• LDQP query translation• Architectural view – LDSM• Conclusion
Mobile technology- latest trend
User friendly app development
Easy answering of position
dependent queries
o Spatial queries- backbone of LBS
o Tool & branch of mobile query processing-SQP(Spatial Query Processing)
o Two types-
1. Location Aware Queries
2. Location Dependent Queries
o Dependency on user’s location
o Location is implicitly defined in the query
o Binding location to query referred as location binding
o Processing depends on data types:
Static data
Dynamic data
Middleware architectures – functions
Validation of query & requesting position determining service to provide location
Target data server converts query to correct format
Decomposing query & sending data to target server for processing
Combining results & formatting them
• Location dependent service manager-middleware architecture
• Supports service provider & wireless networks
• Caching & pre-fetching enriches functionality
CONCLUSION
• User friendly
• Advancement, popularity & profitable market in near future
• Not yet wide-spread
• Problems faced in processing of CLDQ(continuous location dependent queries)