| 摘要 |
Granting and denying authorities for access to entities within the database to a principal, such as a user; where the determination of operational access is based on permissions and relevant to the entity. Permissions may be granted to a number of groups, and access may depend on type or operations such as create, read, update and delete. Authorities may be organized in a hierarchy. This allows coarse and fine grained permissions to be granted. |
