Tera Data Interview Questions and Answers
Question - 71 : - What is the easiest method to generate the sequence during the display time in Teradata?
Answer - 71 : -
This can be done with the help of a sub-feature known as CSUM.
It is not always necessary that these components are applied at the same time. Depending on the task, a specific or all of them can be used for getting the outcomes.
Question - 72 : - While working with Teradata, what are the important functions that you have performed with the help of the Access Module Processor?
Answer - 72 : -
Access Module Processor is actually loaded with the Database Manager subsystems. IT is because of no other reason the tasks that can easily be performed through it are performing DDL, DML, implementation of Joins and Aggregations, applying, and as well as releasing of the locks.
Question - 73 : - How you will restart the system in case the Fast Load Script fails to operate in a reliable manner?
Answer - 73 : -
This can be done with the help of two useful methods. The users can go ahead with running the old file without dropping the error table completely. Rather than rectifying the errors, they can execute the command again and again. The other method that can enable them to simply keep up the pace is running a new file. Basically, the script is executed in this process and something which helps them in this matter ends to load and beginning table. This generally removes all the barriers from the tables and the entire script can be run again easily.
Question - 74 : - Is it possible in Teradata to analyze the symbols of string present at different locations?
Answer - 74 : -
Yes, the users can perform this task, and generally, for this, a process known as parsing is considered. The process simply checks the different types of errors such as syntactical and, semantics. In addition to this, it can also be considered for the purpose of checking whether the object exists actually or not.
Question - 75 : - In Teradata, what exactly is Access Module Processor?
Answer - 75 : -
Access Module Processor is a virtual processor that is responsible for managing and controlling a single segment of a database. It is not possible by any other Access Module Processor to share the same. Thus, it is also called a secure or shared-nothing architecture.
Question - 76 : - What is a Parsing engine in Teradata?
Answer - 76 : -
It is basically an approach that is responsible for enabling the users to handle all the SQL requests and then provide responses in the SQL. There are several software components present in it and the users are free to split the SQL into different sections. These sections are then transferred to the AMP in a defined or in random manner.
Question - 77 : - How data management is different from that of database management?
Answer - 77 : -
Data management simply means managing a volume of data that is generally measurable or when the data size is small. It doesn’t take a lot of effort even if the data is unstructured. The data is mostly a part of any large group in this approach. On the other side, database management is a bit different from data management although they both seem similar. In this, the volume of data is high and data can have multiple sources and types which are stored at a specific location. Managing the entire database is a bit difficult and sometimes needs time.
Question - 78 : - What is the PPI in Teradata?
Answer - 78 : -
PPI stands for Partition Primary Index and is basically a feature used for storage purposes. The storage is in the middle range and avoids the need for a complete table scan.
Question - 79 : - When you will make use of Spool space in Teradata?
Answer - 79 : -
It is used for running the queries
Question - 80 : - In Teradata, what according to you is the biggest issue, and how it can be avoided simply?
Answer - 80 : -
The failure of the node is one of the major problems in Teradata. Although the chances are less, it creates several glitches when happens. There is a dedicated feature in Teradata to control this situation and i.e. creating a Clique. The same is actually an assortment of nodes that are shared between the drives which are common. When this approach is considered, the failure of one node doesn’t make much impact.