By now, all have been done to define data schemas and all kinds of rules. On the right-most of MetaStudio's toolbar, there is a Schema button pushing which the data schema file and all data and clue extraction instruction files will be uploaded onto the servers. The data schema file will be uploaded onto MetaCamp server and instruction files will be uploaded onto DataStore server. At the same time, an original clue to crawl the Web will be stored in SpiderClue table on DataStore server. Thereafter DataScraper can crawl and extract data and clues from the Web along this clue.