NIFS (National Institute for Fusion Science) Atomic and Molecular Numerical Database is introduced. Atomic and molecular data of various collision processes in plasma are collected and input to the database. The database is accessible via internet and data can be retrieved by querying an element name, an ionic stage, or other conditions. Numerical data are shown as a table and a graph which can be downloaded as a PDF file. Our other data activities on data compilation, evaluation, and production are also introduced.