Algorithm 3: Algorithm for Data Retrieval Using SELECT-ASPL.

Initially, the Parallel Server (PS) contains obfuscated hybrid data(O-Hd), PPd- pre-processed data, input (Parallel Server)- PSin Input:PSin, PPd Foreach input  Select ☐input (PSin)  // find PSin using APSL If(specified big data DB = O-Hd)  select ☐ (Join method. (O-Hd))  O(O-Hd)☐( O-Hd) Whilepre-processing  pre-processing_data count ≠ select optimum join method return, specified big data DB ≠ O-Hd End while End if If (PPd ≠ (O-Hd)) // Compute hit rate If (hit rate data count ≥ no. of O(O-Hd) + no. of PPd)  Else     // data retrieving rate positively high check no. of PPd End if End if Repeat  If no. of PPd> no. of (PSin)    execute: Compute the hit rate Else if (no. of PPd < no. of (PSin)    continue (data retrieving rate positively low) Else rechecks no. of PPd End if (Until termination criterion met) End for Return accurate data retrieving rate && retrieve data as PSin