In this era of information explosion, data has become a key force to promote social development. We all live in a world of data, generating, using and relying on it all the time. Data has not only changed the way we live, but also reshaped the development model in various fields, including economy, politics and culture. Because of this, in-depth exploration of data theory and technology is not only a challenge for information experts, but also an inevitable requirement for the whole society.