Wednesday, April 16, 2014

Ax 2012 Interview questions.

 Difference between edit and display method

Display Indicates that the method's return value is to be displayed on a form or a report.
The value cannot be altered in the form or report
Edit Indicates that the method's return type is to be used to provide information for a field that is used in  In a form. The value in the field can be edited.     

 Difference between perspectives and table collection

Perspectives  can organize information for a report model  in the Application Object Tree (AOT).
A perspective is a collection of tables. You use a report model to create reports.
Table collection is a collection of table, which sharing across all the virtual companies.  


How can we restrict a class to be further extended?

 using Final Keyword for ex: public final class <ClassName>

Difference between arrays and containers

Arrays: An array is a list of items with same data type and the same name only the index differs,

Containers: A Container is a dynamic list of items containing primitive data types and /or some composite data types

what is difference between unique index and primary index

Primary Key uniquely identifies the record and the 
UNIQUE index on the primary key ensures that no duplicates 
Values will be stored in the table
1)Primary key creates an implicit clustered index on a table, 
  unique key does not create any implicit index.
2)Columns defined as primary key does not allow null values,
where as columns defined as unique can allow null values.
3)A table can have just one primary key (can be a composite key) 
where as there can be multiple unique columns (keys).
4)Primary key is a unique key with the above mentioned features
http://msdn.microsoft.com/en-us/library/aa656402.aspx

No comments:

Post a Comment