[Koha] imported reocrd indexing in KOHA

Sir, I want to know how indexing of mark record is achieved in KOHA to searched imported record from other resource. I am importing books reocrd from SQL server databse into KOHA's MySQL database. Data is successfully imported into the KOHA's database but it can nor be searched from the KOHA's catalogue search. I also want to know that in which directory the indexing is saved? How can be index generated? I don't perl but i know C#  .net very well\ Please reply me. Every suggestion is appreciated. Thanks