With the widespread use of big data, such as social networking and e-commerce, enterprises need to quickly access data in huge amounts of data. Under such conditions, the Relational Database (RDB) has been unable to meet the demand, and more and more companies have decided to switch to NoSQL database to maintain competitiveness. It is necessary to convert the data of the original RDB into a NoSQL database. Therefore, this paper proposes algorithms to convert the Relation Schema from RDB to one of the NoSQL databases, Wide Column Store database, and to import the actual data from the RDB into the Wide Column Store database. The proposed algorithms can reduce the operating cost of the enterprise, speed up the data query speed, and enhance the competitiveness of the enterprise.