Most Recent TeraData TDVAN5 Exam Dumps

The AcctShared role should be granted SELECT access on the BusinessViews database. This ensures that the role itself has the necessary privileges.

Then, you can nest this role by granting AcctShared to the individual roles of AcctUsers, AcctDev, and AcctBatch. This role nesting strategy allows the users in these groups to inherit the permissions from AcctShared without having to directly grant the privileges to each individual role.

This approach maintains a clean and efficient permission structure using role nesting.

Profiles in Teradata are used to manage and enforce resource limits for groups of users. This includes defining spool space, temporary space, and permanent space for users who share similar needs. Spool space is important for query processing, and managing it by profile helps prevent individual users from consuming excessive resources and ensures better overall system performance.

Reducing the growth of the DBC.AccessRights table is not directly related to profiles. Profiles do not reduce access rights or the growth of this table, which tracks individual user privileges.

Managing user privileges on database objects is handled through roles and grants, not profiles. Profiles focus on resource management, not privileges.

Assigning permanent space for groups of users is partially true since profiles can manage some space attributes, but the main focus of profiles is on managing spool space rather than permanent space.

When loading sensor data, especially if it involves many numeric columns, casting the data to appropriate types (like INT, FLOAT, etc.) in a view can significantly improve query performance and reduce storage overhead. This approach ensures that the numeric data is handled efficiently, avoiding unnecessary conversions or using inefficient data types such as VARCHAR.

When a user creates an object (such as a table, view, or database), they automatically receive ownership privileges on that object. This means the creator has full control over the object, including the ability to grant or revoke access to other users, modify the object, and drop it if necessary.

Option B (Explicit) refers to privileges that are specifically granted by an owner or an administrator, but in this case, the privileges are automatically granted by virtue of object creation.

Option C (Inherited) refers to privileges a user inherits through roles or profiles, but that's not relevant to the automatic ownership granted upon object creation.

Option D (Automatic) could be misleading here. While ownership privileges are granted automatically, the correct term for the type of privilege is ownership.

CPU Skew is a metric that measures the uneven distribution of CPU usage across AMPs (Access Module Processors). In the case of an accidental unconstrained product join on a large, uniformly distributed table, certain AMPs may handle significantly more work than others, leading to high CPU Skew. This skew occurs because the product join results in an inefficient execution plan, where data from the large table is unnecessarily compared row-by-row with another table.

Option A (AWT Wait Time) refers to the time queries spend waiting for available AMP Worker Tasks, but it is not directly related to detecting the inefficiencies caused by product joins.

Option C (CPU Disk Ratio) measures the relationship between CPU usage and disk I/O. While it could indicate inefficiency, it doesn't directly pinpoint product join issues like CPU Skew does.

Option D (CPU Utilization) reflects overall CPU usage but doesn't indicate imbalance across AMPs, which is critical for detecting issues like product joins.