Repository is concerned with abstracting the persistence environment that could be of any type: database, data grid, file system or whatever stores data in a non-volatile manner, and it should support any form of querying that provides information requested by the caller. IsIt is common for repositories to use implementation of a persistence specification that provide methods for lazy fetching, getting partially specific NPersistence for C# or JPA for Java, specifications that provides methods for lazy fetching, for early mentioned specifications which include EntityManager.GetReference and EntityManager.getReference methods.
The pattern that recommends querying an entire entity is active record pattern.
