Abstract: This disclosure relates to representing and using metadata via graph database. In some aspects, a method includes receiving, at one or more computing devices, first metadata associated with data files from one or more data sources, the first metadata representing a plurality of features of associated data included in the data files, the plurality of features including at least one of a file name, a table name, an attribute, a row name, and a column name; determining relationships among the plurality of features to generate second metadata representing content of the data files; and generating a graph database representing the content of the data files, the graph database including a set of nodes and a set of edges, wherein each node in the set of nodes represents a feature of the plurality of features, and each edge represents a relationship between two nodes in the set of nodes.