Dell emc engineer hierarchy9/26/2023 Objects: Any system, resource file, printer, terminal, database record, etc.RBAC mechanisms are a flexible alternative to mandatory access control (MAC) and discretionary access control (DAC). ![]() Role-based security provides the flexibility to define permissions at a high level of granularity in Microsoft SQL, thus greatly reducing the attack surface area of the database system. However, a role brings together a set of users on one side and a set of permissions on the other, whereas user groups are typically defined as a set of users only. Role-based access control (RBAC): Permissions are associated with roles, and users are made members of appropriate roles. In both discretionary and mandatory control cases, the unit of data and the data object to be protected can range from the entire database to a single, specific tuple. ![]() Mandatory access control is applicable to the databases in which data has a rather static or rigid classification structure-for example, military or government environments. Mandatory control: Each data object is labeled with a certain classification level, and a given object can be accessed only by a user with a sufficient clearance level. For discretionary access control, we need a language to support the definition of rights-for example, SQL.
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