# Structs
Collection it's an embedded type of mgo.Collection, made to use the interfaces it implements, Collectioner, on it's methods signatures.
Database it's an embedded type of mgo.Database, made to use the interfaces it implements, Databaser, on it's methods signatures.
Query it's an embedded type of mgo.Query, made to use the interfaces it implements, Querier, on it's methods signatures.
Session it's an embedded type of mgo.Session, made to use the interfaces it implements, Sessioner, on it's methods signatures.