Phân tích tư tưởng của nhân dân qua đoạn thơ: Những người vợ nhớ chồng… Những cuộc đời đã hóa sông núi ta trong Đất nước của Nguyễn Khoa Điềm
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Oracle provides for easy and controlled privilege management through roles. Roles are named groups of related privileges that are granted to users or to other roles. They are designed to ease the administration of privileges in the database.Role characteristicsRoles can be granted to and revoked from users with the same commands that are used to grant and revoke system privileges.Roles can be granted to any user or role. However, a role cannot be granted to itself and cannot be granted circularly.A role can consist of both system and object privileges.A role can be enabled or disabled for each user who...
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Managing RolesRoles
