Wednesday, 4 February 2015

Most Recent Asked AB Initio Interview Questions and Answers (Part4)

16. What is the purpose of ramp limit?
The limit parameter is representing how much reject events exist and is an integer, while the limit parameter is the rate of reject events that the records processed has, it is a real number.

17. What is the reason for a database to contain stored procedures?
The main reason is network traffic reduction. Because stored procedures are precompiled SQL blocks, the time of execution can be reduced. In this way the application performance is higher, being stored in the database the procedure will be called by the application and execute faster than in the case is not already compiled. They also provide reusability for different other applications.

18. What is API mode versus the utility mode?
Both API and utility modes are used as connection interfaces to the databases for the purpose of performing specific tasks required by the user. They allows us to easily access different functions that the vendor put for use. The role of each function is related to the nature of the databases. The difference between the two modes is that API is known to be slower but offers a higher range of flexibility than the utility mode. Also API is considered to be a more diagnostic feature.

19. What is the reason for using parameterized graphs?
Their role is seen when we are trying to use the same graph many times for various files, in this way we must set parameters for the graph, which get replaced anyway during run. So we can keep one graph version for different files and not different versions .

20. What means writing of wrapper?
Writing of a wrapper will help us run sequential running of two graphs, for instance in order to do this the user must use that feed that was generated by the first graph into the next graph, and for multiple use into the next graph and so on.
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