The DDBJ, or DNA Data Bank of Japan, is a key biological database that collects and stores DNA sequences. Established in 1986, it serves as a vital resource for researchers worldwide, providing access to genetic information that can aid in various scientific studies, including genomics and evolutionary biology. DDBJ collaborates with other major databases, such as GenBank and European Nucleotide Archive, to ensure comprehensive data sharing. It plays a crucial role in the global effort to catalog genetic information, supporting advancements in fields like medicine, agriculture, and environmental science.