PASS GUARANTEED 2025 PASS-SURE TERADATA TDVAN5 TEST QUESTIONS ANSWERS

Pass Guaranteed 2025 Pass-Sure TeraData TDVAN5 Test Questions Answers

Pass Guaranteed 2025 Pass-Sure TeraData TDVAN5 Test Questions Answers

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TeraData HCIA-Datacom V1.0 Sample Questions (Q27-Q32):

NEW QUESTION # 27
An Administrator has been presented with these performance metrics from the DBQLOGTBL table for four queries:

The Administrator needs to identify which query is suspected to be causing a full table scan or large redistribution.
Which query is producing this result?

  • A. QRY_C because of UII
  • B. QRY_A because of PJI
  • C. QRY_B because of IO SKEW
  • D. QRY_D because of CPU SKEW

Answer: C


NEW QUESTION # 28
The Administrator has received a request to add SELECT rights on the BusinessViews database to end users, developers, and batch accounts in the accounting unit. The following roles are set up for each group:

The Administrator created the AcctShared role and will use it in a role nesting strategy to provide the required access.
Which actions can the Administrator take to fulfill this request?

  • A. Grant SELECT on AcctShared to BusinessViews, then grant AcctShared to AcctUsers. AcctDev, and AcctBatch.
  • B. Grant SELECT on BusinessViews to AcctShared, then grant AcctShared to AcctUsers. AcctDev, and AcctBatch.
  • C. Grant SELECT on AcctShared to BusinessViews, then grant AcctUsers, AcctDev, and AcctBatch to AcctShared.
  • D. Grant SELECT on BusinessViews to AcctShared, then grant AcctUsers, AcctDev, and AcctBatch to AcctShared.

Answer: B

Explanation:
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.


NEW QUESTION # 29
A user runs a number of large, complex queries that regularly generate insufficient memory errors. The Administrator increases the value of the MaxParseTreeSegs DBS control field in order to allocate more parse tree segments to the parser for parsing requests.
Which action must be taken before the queries will run without memory errors?

  • A. Purge the request cache.
  • B. Execute an OUTPUT command.
  • C. Execute an Alter METHOD command for
  • D. The user should log out and log back in to a new session.

Answer: D


NEW QUESTION # 30
The Administrator has just created a new database object on a Vantage system.
Which privilege is NOT automatically granted to that database on itself?

  • A. CREATE TRIGGER
  • B. CREATE AUTHORIZATION
  • C. CREATE PROCEDURE
  • D. CREATE MACRO

Answer: B

Explanation:
When a new database object is created in Teradata Vantage, certain object creation privileges (such as CREATE MACRO, CREATE PROCEDURE, and CREATE TRIGGER) are typically granted automatically to the database or user who created the object.
However, the CREATE AUTHORIZATION privilege, which allows a user to create an authorization object (used for external authentication to external systems, such as a cloud storage service), is not automatically granted. This privilege requires an explicit grant.


NEW QUESTION # 31
A customer is complaining that the creation of a large table in the lab environment is getting stuck in the merge step. The customer is using the following command to create the table:
CREATE TABLE ... AS (SELECT * ...) WITH DATA
Which recommendation will help the merge step?

  • A. The table should be created with "CREATE TABLE ... AS (SELECT *...) WITH NO DATA", and afterwards, "INSERT ... SELECT *" should be used to fill the table.
  • B. Users of the lab may have lower priority than other workloads, so the creation of the table should be moved to off-peak hours.
  • C. The MERGEBLOCKRATIO should be specified for the table to improve the data block merge operation.
  • D. A column that provides good distribution should be specified as PRIMARY INDEX.

Answer: A

Explanation:
Merge step issues often occur when a large amount of data is being processed during the table creation, especially if the system is trying to simultaneously create the table and insert data.
By using "WITH NO DATA", the table structure is created first, without the actual data being inserted during the table creation process. The *"INSERT ... SELECT " command can then be used afterwards to populate the table in a more controlled way, reducing the load on the system during the creation phase and potentially improving the efficiency of the merge step.
Specifying a good distribution for the primary index can help overall performance, but it doesn't directly address the issue with the merge step in this scenario.
Specifying the MERGEBLOCKRATIO isn't typically a solution for this specific problem; the merge block ratio is more about the optimization of data block merges rather than the creation of tables.
Moving the creation to off-peak hours may help if the environment is busy, but it doesn't directly address the core issue of the merge step getting stuck.


NEW QUESTION # 32
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