Querying the database using Schema-free SQL

Shema-free SQL takes into consideration two relaxations 1. Schema Relaxation: Users need not have to specify the exact name of the tables and attributes • Join Path: users need not have to specify the join path in the query Reducing user workload of writing SQL queries and knowing the complete database schema to query the RDBMS in order to get desired results Generation of Join Network (Interpretation of SQL) Select a single relation tree node as a join network and keep expanding them to create a join network. While expanding I.e. joining nodes with the help of edges, nodes and viewgraphs are taken into consideration. 1. Potential Estimation: For pruning purpose 2. Legality Test: Use of Rightmost Path Expansion to avoid generating isomorphic graphs, i.e. expanding the network(graph) only from the newly added child node to the parent node. 3. Top K MTJN are generated and the corresponding SQL queries are generated