Home
Designing databasesThe first step in creating a relational database is to construct a data model, which is a precise, complete definition of the data you want to store. After you prepare your data model, you must implement it as a database and tables. To implement your data model, you first select a data type for each column and then you create a database and tables and populate the tables with data. You can also implement fragmentation strategies and control access to your data.
Designing and Implementing a DatabaseThe HCL OneDB™ Database Design and Implementation Guide provides information to help you design, implement, and manage your HCL® OneDB® databases. It includes data models that illustrate different approaches to database design and shows you how to use structured query language (SQL) to implement and manage your databases.
Managing databases
Grant and limit access to your database
Grant privileges
Automate privileges
Roles
Manipulate user privileges and grant roles to other rolesAs DBA, you can use the GRANT statement to grant role privileges to users. You can also give a user the option to grant privileges to other users. Use the WITH GRANT OPTION clause of the GRANT statement to do this.

Manipulate user privileges and grant roles to other roles

As DBA, you can use the GRANT statement to grant role privileges to users. You can also give a user the option to grant privileges to other users. Use the WITH GRANT OPTION clause of the GRANT statement to do this.

You can also use the WITH GRANT OPTION clause when granting privileges to roles as in this example:

GRANT rol1 TO usr1 WITH GRANT OPTION;

The WITH GRANT OPTION clause is valid only for roles (and for access privileges) that you grant to users. The database server issues an error if you include the WITH GRANT OPTION keywords when the TO clause specifies a role, or when it specifies the PUBLIC group.

When you grant role privileges, you can substitute a role name for the user name in the GRANT statement. You can grant a role to another role. For example, say that role A is granted to role B. When a user enables role B, the user gets privileges from both role A and role B.

However, a cycle of role granting cannot be transitive. If role A is granted role B, and role B is granted role C, then granting C to A returns an error.

If you must change privileges, use the REVOKE statement to delete the existing privileges and then use the GRANT statement to add the new privileges.

Rate this topic

5 stars 4 stars 3 stars 2 stars 1 star

Comment on this topic.

By clicking this box, you acknowledge that you are NOT a U.S. Federal Government employee or agency, nor are you submitting information with respect to or on behalf of one. HCL provides software and services to U.S. Federal Government customers through its partners immixGroup, Inc. Contact this team at https://hcltechsw.com/resources/us-government-contact. Do not include any personal data in this Comment box.