Chapter 7. Data Roles

Data roles, also called entitlements, are sets of permissions defined per VDB that dictate data access (create, read, update, delete). Data roles use a fine-grained permission system that JBoss Data Virtualization will enforce at runtime and provide audit log entries for access violations. Refer to the Administration and Configuration Guide and Development Guide: Server Development for more information about Logging and Custom Logging.

Prior to applying data roles, you should consider restricting source system access through the fundamental design of your VDB. Foremost, JBoss Data Virtualization can only access source entries that are represented in imported metadata. You should narrow imported metadata to only what is necessary for use by your VDB. When using Teiid Designer, you may then go further and modify the imported metadata at a granular level to remove specific columns or indicate tables that are not to be updated, etc.

If data role validation is enabled and data roles are defined in a VDB, then access permissions will be enforced by the JBoss Data Virtualization Server. The use of data roles may be disabled system wide using the setting for the teiid subsystem policy-decider-module. Data roles also have built-in system functions (see Section 2.4.18, “Security Functions”) that can be used for row-based and other authorization checks.

The hasRole system function will return true if the current user has the given data role. The hasRole function can be used in procedure or view definitions to allow for a more dynamic application of security - which allows for things such as value masking or row level security.