Editing API:EPrints/DataSet (section)

==DESCRIPTION==
This module describes a dataset.

A repository has several datasets that make up the repository's metadata schema. The list of dataset ids can be obtained from the repository object (see [[API:EPrints/Repository|EPrints::Repository]]).

A normal dataset (eg. "user") has a package associated with it  (eg. [[API:EPrints/DataObj/User|EPrints::DataObj::User]]) which must be a subclass of [[API:EPrints/DataObj|EPrints::DataObj]]  and a number of SQL tables which are prefixed with the dataset name. Most datasets also have a set of associated [[API:EPrints/MetaField|EPrints::MetaField]]'s which may be optional or required depending on the type eg. books have editors but posters don't but they are both EPrints.

The fields contained in a dataset are defined by the data object and by any additional fields defined in cfg.d. Some datasets don't have any fields.

Some datasets are "virtual" datasets made from others. Examples include  "inbox", "archive", "buffer" and "deletion" which are all virtual datasets  of of the "eprint" dataset. That is to say "inbox" is a subset of "eprint"  and by inference contains [[API:EPrints/DataObj/EPrint|EPrints::DataObj::EPrint]]. You can define your  own virtual datasets which opperate on existing datasets.

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