I have done exactly this type of thing for a lawyer firm who wanted the data from all the Florida County probation sites, store them in a PostgreSQL database and export into csv files.
Relevant Skills and Experience
I've been working with Databases since 1984: including PostgreSQL, data analysis, modeling, migration, conversion, integration, aggregation, mining, optimization, performance tuning, warehousing, etc.
Proposed Milestones
₹555 INR - Fully document the scope of the project with time lines, etc - project plan
₹30000 INR - Do the tasks that need to be done based on project plan; bill wwekly
₹2500 INR - Determine any modification or improvements to current design, code and functionality
₹2500 INR - Test and fine tune, optimize, etc
What OS and version are you running?
What database are you thinking of using?