: NCR Teradata NR0-016
: Teradata Application Development v2r5 Exam
Version : R6.1
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1. Which two types of journals can be defined for a table? (Choose two.) A. Transient LOCAL AFTER JOURNAL B. Transient UPDATE ONLY JOURNAL C. Permanent UPDATE ONLY JOURNAL D. Permanent LOCAL AFTER JOURNAL E. Permanent DUAL BEFORE JOURNAL Answer: DE 2. Which type of processing workload is least likely to justify the cost of upgrading a system? A. executive report B. daily sales report C. quarter end report D. nightly batch process Answer: C 3. How are Volatile tables similar to Derived tables? (Choose three.) A. are local to the query B. table definition kept in memory C. are designed for optimal performance D. have no Data Dictionary access or transaction locks Answer: BCD 4. Which two utilities can you use to export data for a report using RECORD mode from the Teradata database? (Choose two.) A. BTEQ B. TPump C. FastExport D. Teradata SQL Assistant Answer: AC 5. What are two characteristics of an aggregate join index? (Choose two.) A. can be directly referenced by a query B. must contain more than one table reference C. can be created using a Global Temporary table D. automatically reflects changes in the underlying detail data E. COUNT is automatically present if SUM is used Answer: DE 6. Which four factors are important to consider when deciding whether to calculate summary results on demand or to create a summary table? (Choose four.)
A. concurrency of users B. typical rows per value C. response time requirements D. complexity of the calculations E. frequency of summary request F. volatility of the column to summarize Answer: CDEF 7. Why should you create a view with aggregation? (Choose two.) A. to reduce query complexity B. to minimize macro executions C. to improve query performance D. to minimize summary table maintenance Answer: AD 8. To ensure you are working with current, consistent data, which lock should you recommend for SELECT queries in a multi-user environment with update activity? A. read B. write C. access D. exclusive Answer: A 9. What are three characteristics of tactical queries? (Choose three.) A. highly tuned B. use direct access path C. multiple tables scanned D. defined response time requirements Answer: ABD 10. Denormalization is done in which phase of modeling? A. logical B. physical C. dimensional D. extended logical Answer: B 11. Which three statements are true about the Extended Logical Data Model (ELDM)? (Choose three.) A. It contains the business rules of the organization. B. It is the main source of information for creating the PDM.
C. It maps applications and transactions to the related objects. D. It provides demographics of data distribution, sizing, and access. Answer: BCD 12. What are three characteristics of third normal form? (Choose three.) A. There are no repeating groups. B. Indexes are defined on the attributes. C. Attributes must relate to the entire foreign key. D. Attributes must relate to the entire primary key. E. Attributes must relate to the primary key and not to each other. Answer: ADE 13. Which three are introduced in the ELDM? (Choose three.) A. foreign keys B. index selection C. join access rows D. column nullability E. maximum rows null F. value access frequency Answer: CEF 14. Which application development API provides maximum control over Teradata connectivity? A. CLI B. ECLI C. ODBC D. Embedded SQL Answer: A 15. Which application development API requires a pre-processor in addition to a compiler for a high-level language? A. CLI B. ECLI C. ODBC D. Embedded SQL Answer: D 16. What are three characteristics of PP2? (Choose three.) A. supports macros B. supports multiple sessions C. supports COBOL, PL/I, C, and Pascal
D. uses indicator variables for NULL handling Answer: ABD 17. What are three reasons for running Visual Explain on queries during application development? (Choose three.) A. to establish run times B. to determine access paths C. to determine locking profiles D. to validate the usage of indexes E. to calculate necessary spool space requirements Answer: BCD 18. What does the Statistics Wizard do? (Choose three.) A. allows for "what-if" analysis B. allows you to schedule statistics collection C. makes recommendations based on table demographics D. allows importing of workload from other Teradata utilities Answer: BCD 19. What does the TSET utility do? (Choose two.) A. creates a view of your data demographics B. allows you to schedule statistics collection C. allows for the importing of workloads from other Teradata utilities D. allows you to import data demographics from one system to another E. allows you to import system characteristics from one system to another Answer: DE 20. Which two tools allow you to import workloads from other Teradata tools? (Choose two.) A. TSET B. Index Wizard C. Visual Explain D. Statistics Wizard Answer: BD 21. Which two access types provide good OLTP performance? (Choose two.) A. nested joins B. full cylinder read C. unique secondary index D. non-unique secondary index
Answer: AC 22. You have a 4-node Teradata system, with 40 AMPs and 6 PEs. By default, what is the maximum number of sessions that can be connected at the same time? A. 240 B. 400 C. 720 D. 960 E. 2400 Answer: C 23. What are two ways to lessen the impact of TPump on the system? (Choose two.) A. apply options in the Ferret utility B. add a SLEEP parameter to the TPump job C. add a TENACITY parameter to the TPump job D. reduce the RATE parameter in the TPump job E. modify the Priority Scheduler Facility (PSF) settings Answer: DE 24. Which statement applies to applications written for Teradata? A. The applications should use set manipulation to leverage parallelism. B. The applications should minimize the use of extensions to ANSI SQL. C. The applications should use the Optimizer to resolve rules-based calculations. D. The applications should be written to use multiple instances of the program running in parallel. Answer: A 25. Assuming that the department_number
column is not an index, which three statements are true
about the following? (Choose three.) UPDATE employee SET salary_amount = salary_amount * 1.1 WHERE department_number = 403; A. Read locks are applied. B. A pseudo lock is applied. C. Write locks are applied at the table level. D. Write locks are applied on all updated rows. E. Write locks will queue behind existing read locks. Answer: BCE 26. Two tables prepared simultaneously for a join is an example of what kind of parallelism? A. multi-AMP B. multi-step
C. multi-session D. multi-statement E. multi-threading Answer: B 27. Given this request where col is the UPI of table T1 : SELECT * FROM T1 WHERE col = 1; SELECT * FROM T1 WHERE col = 2; Which three types of parallelism does it exhibit? (Choose three.) A. multi-step B. multi-AMP C. multi-request D. multi-session E. multi-statement Answer: ABE 28. A person submits a high volume of all-AMP requests. What two strategies can be used to increase parallelism? (Choose two.) A. use more sessions B. use NUSIs on the tables C. use multi-statement requests D. use multi-request transactions Answer: AC 29. Given: USING (x INTEGER, y INTEGER, z INTEGER) EXEC Macro1(:x, :y, :z); Which three statements about the execution of this macro are true? (Choose three.) A. It will be cached immediately. B. It contains multiple statements. C. No values are present for the Optimizer. D. It should be demographically dependent. E. It should be demographically independent. Answer: ACE 30. Which three are valid considerations for optimal system performance? (Choose three.) A. Statistics are collected on all indexes. B. Primary indexes are chosen based on access, uniqueness, and stable data values. C. The disk space consumed by a secondary index negatively impacts OLTP applications.
D. The performance benefit of a secondary index for OLTP applications outweighs the performance cost for batch maintenance. Answer: ABD 31. Which three features can be used to improve overall system performance? (Choose three.) A. Priority Scheduler B. NUSI C. macros D. triggers E. Transient Journals F. Permanent Journals Answer: ABC 32. Which three features can you use to improve overall system performance? (Choose three.) A. PMON B. triggers C. establish profiles D. multi-value compression E. multi-statement requests F. Partitioned Primary Index (PPI) Answer: DEF 33. Which two statements regarding rows per NUPI value are true? (Choose two.) A. All rows with the same NUPI value always end up in the same datablock. B. Adding a second column to the NUPI generally reduces the number of rows per primary index value. C. A large table with fewer unique NUPI values than there are AMPs in the system can still have an even distribution. D. A SET table with many rows for each NUPI value has much worse insert performance than a MULTISET table with many rows for each NUPI value. Answer: BD 34. Consider the table
created as follows:
CREATE TABLE t1 ( a integer, d date, v varchar(100)) PRIMARY INDEX (a) PARTITION BY RANGE_N(d BETWEEN
DATE '2002-01-01' AND DATE '2007-12-31' EACH '1' YEAR); and the query: SELECT v FROM t1 WHERE d = DATE '2003-08-17'; Which plan will the Optimizer use to find qualifying rows? A. full scan on a single AMP B. hash lookup on each AMP C. value lookup on everyAMP D. single partition scan on every AMP E. single partition scan on a single AMP Answer: D 35. When can an identity column be useful in a table definition? (Choose three.) A. when a Partitioned Primary Index (PPI) is desired for the table B. when a foreign key is desired for the table C. when a primary key is desired for the table D. when a primary index is desired for the table E. when a unique secondary index is desired for the table Answer: CDE
36. Consider the following identity column definition: Col1 INTEGER GENERATED ALWAYS AS IDENTITY (MAXVALUE 100) Which two statements are true about Col1 ? (Choose two.) A. The first inserted row will have a value of 1. B. The table cannot have more than 100 rows. C. Deleted rows may be replaced in the sequence. D. By explicitly specifying values in the insert, it is possible to skip numbers in the sequence. Answer: AB 37. What can be used to provide column level security? (Choose two.) A. sparse index B. access rights C. view or macro D. roles and profiles Answer: BC
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