FREE Teradata Random Questions and Answers
Which of the following features of a partitioned table over a nonpartitioned table is a benefit?
I) There are fast deletes of all the rows in a partition
II) Fewer AMPs are involved when accessing data
III) Range queries can be executed without a secondary index
IV) There is faster access of a single row via a primary index access
Explanation:
The correct answer is (I), (II), and (III).
Partitioning is a technique used in Teradata to horizontally divide a large table into smaller, more manageable pieces called partitions. Each partition contains a subset of the rows in the table and is stored on one or more AMPs (Access Module Processors) in the system.
Because of _____, a uniqueness value is necessary to provide a unique Row ID.
A secondary index operation that is not unique is always a ____________.
Explanation:
A non-unique secondary index (NUSI) operation in Teradata is always an ALL AMPs operation.
Which of these statements regarding databases is true?
What part is in charge of input conversion?
Which will only ever return one Row?
Explanation:
Both UPI (Unique Primary Index) and USI (Unique Secondary Index) can return at most one row for a given value.
What Operating System is capable of running Teradata?
Explanation:
Teradata is a database management system that can run on various operating systems. It supports multiple platforms including Windows, Linux, and z/OS (IBM mainframe operating system). Therefore, the correct answer is "All of the above."
Teradata provides a consistent database experience across all these platforms, allowing customers to choose the operating system that best suits their needs. The choice of operating system may depend on factors such as performance, scalability, reliability, security, and cost. Teradata also provides client software for Windows and Linux that allows users to connect to the Teradata database.